/*课程设计项目名称：学生档案管理系统作者：施瑞文 时间：2018.3.3 
*/
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<conio.h>
#include<windows.h>
#define N sizeof(struct Student)
#define M sizeof(struct Password)
#define MAX 1000struct Student
{char number[10];   //学号char name[10];   //姓名char sex[2];  //性别struct Birthday  //出生日期 {int year;   //年int month;  //月int day;    //日 }birtnday;struct Score  //成绩{float c_language;  //c语言float math;  //高数float Russian;//俄语float Russian_hearing; //俄语听力float professional;  //专业导论float politics;  //政治 }score;char remark[100];  //备注 int num;struct Student *next;
};
typedef struct Student Stu;
typedef Stu *Stup;typedef struct Password
{char password[18];struct Password *next;
}pass;
typedef pass *passw;typedef struct TOTAL    //总分 
{char number[10];char name[10];char sex[2];float c_language;  //c语言float math;  //高数float Russian;//俄语float Russian_hearing; //俄语听力float professional;  //专业导论float politics;  //政治float sum;
}Total; 
Total total[MAX];//好多自定义函数 
void color(short x);//设置颜色
void HideCursor();     //隐藏光标
void toxy(int x, int y);     //将光标移动到X,Y坐标处
void menu();    //主菜单 
void over();   //退出软件
void signin();   //登陆 
passw ff();    //将文件中的内容读入链表，返回值为表头地址 
void save_password(passw p);//保存密码 
void amend_password();   //修改密码 
void input_information();  //信息录入 
void amend_information();  //修改信息 
void delete_information();  //删除信息 
void delete_number();  //按学号查询删除
void delete_name();   //按姓名查询删除 
void save_information(Stup p);   //保存信息 
void print_information();    //信息显示 
Stup ss();   //将文件中的内容读入链表，返回值为表头地址
void find_information();   ///查找信息 
void find_number_information();   //按学号查询 
void find_name_information();   //按姓名查询 
void statistics_information();  //信息统计 
void average_score();   //平均分
void total_score_ranked();   //总分排名
void fail_numbers();     //各科不及格人数 
void assignment();   //将信息赋值到一个结构体中 
void grade_table();   //各科成绩分布 
void analyze_c();   //c语言 
void analyze_math();//高数 
void analyze_Russian();//俄语 
void analyze_Russian_hearing();//俄语听力 
void analyze_professional();//专业导论 
void analyze_politics();   //政治 
int cmp(const void *a,const void *b);
int cmp1(const void *a,const void *b);  //快速排序 
int cmp2(const void *a,const void *b);
int cmp3(const void *a,const void *b);
int cmp4(const void *a,const void *b);
int cmp5(const void *a,const void *b);
int cmp6(const void *a,const void *b);char _password[18];
passw password_head;
int len;void color(short x)    //设置颜色 
{if(x>=0&&x<=15){SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),x);}else{SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE),x);}
} void HideCursor()     //隐藏光标
{CONSOLE_CURSOR_INFO cursor_info = {1, 0}; SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cursor_info);
}void toxy(int x, int y)      //将光标移动到X,Y坐标处
{
COORD pos = { x , y };
HANDLE Out = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleCursorPosition(Out, pos); 
}int cmp(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).sum)-((*(Total *)a).sum);
}int cmp1(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).c_language)-((*(Total *)a).c_language);
}int cmp2(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).math)-((*(Total *)a).math);
}int cmp3(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).Russian)-((*(Total *)a).Russian);
}int cmp4(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).Russian_hearing)-((*(Total *)a).Russian_hearing);
}int cmp5(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).professional)-((*(Total *)a).professional);
}int cmp6(const void *a,const void *b)  //快速排序 
{return ((*(Total *)b).politics)-((*(Total *)a).politics);
}void menu()   //主菜单
{do{system("cls");    //清屏 fflush(stdin);   //清空缓存 color(14);char t;toxy(45,6);printf("-----学生档案管理系统-----"); toxy(45,7);printf("|                        |");toxy(45,8);printf("|       1.信息录入       |");toxy(45,9);printf("|                        |");toxy(45,10);printf("|       2.信息修改       |");toxy(45,11);printf("|                        |");toxy(45,12);printf("|       3.信息删除       |");toxy(45,13);printf("|                        |");toxy(45,14);printf("|       4.信息显示       |");toxy(45,15);printf("|                        |");toxy(45,16);printf("|       5.信息查找       |");toxy(45,17);printf("|                        |");toxy(45,18);printf("|       6.信息统计       |");toxy(45,19);printf("|                        |");toxy(45,20);printf("|       7.修改密码       |");toxy(45,21);printf("|                        |");toxy(45,22);printf("|       8.退出软件       |");toxy(45,23);printf("--------------------------");t=getch();switch(t){case '1':input_information();break;case '2':amend_information();break;case '3':delete_information();break;case '4':print_information();break;case '5':find_information();break;case '6':statistics_information();break;case '7':amend_password();break;case '8':over();break;default :break;}}while(1);//永远为真 
} passw ff()     //将文件中的内容读入链表，返回值为表头地址 
{FILE *fp;  //文件指针 passw password_head=NULL;fp=fopen("password","a+");   //以追加和读的方式打开名为password的文件 if(fp==NULL){printf("cannot open file"); }//printf("%p\n",password_head);password_head=(passw)malloc(M);   //申请空间 strcpy(password_head->password," ");  //初始化密码 //printf("%s\n",password_head);fread(password_head,M,1,fp);   fclose(fp);    //关闭文件 return password_head;   //返回值表头地址 
}void signin()    //登录 
{do{system("cls");color(13);   //好看的颜色 passw p,head;int i=0;char k;head=ff();   //调用函数，返回值为表头地址 p=head;     //printf("%s\n",p->password);//printf("%p\n",p);char str[]="000000";   //初始密码 toxy(45,6);printf("-----学生档案管理系统-----");toxy(45,8);printf("请输入管理者密码：");for(;;)              //此处为输入密码不回显操作 {k=getch();       //输入k if(k=='\r')      //如果输入k为回车，则跳出循环 {break;}else if(k=='\b')  //如果输入k为删除键 {if(i>0)       //如若密码还没完全删除 {printf("\b");printf(" ");printf("\b");i--;}}else              //如果输入的k既不是删除键，也不是回车键 {_password[i]=k;   //把k的值赋给_password[i]; printf("*");      //输出*号，保护用户隐私 i++;              //密码位数加1 }}_password[i]='\0';if(strcmp(p->password," ")==0)   //判断程序是否是第一次运行，{strcpy(p->password,str);//如果是，则将初始密码000000赋值给p->password save_password(p);   //保存p }if(strcmp(head->password,_password)==0)   //判断密码是否输入正确 {system("cls");toxy(45,8);printf("正在登陆....");Sleep(500);menu();}else{toxy(45,10);printf("密码错误！");Sleep(500);}}while(1);
}void amend_password()   //修改密码 
{system("cls");         //清屏 color(12);    //看着舒服的颜色  passw p,head;       //隐藏光标，看着更舒服 head=ff();do{ system("cls");         //清屏p=head;char password[18],newpassword[18],t,k;int i=0;toxy(45,6);          //将光标移动到坐标为（50，5）的位置 printf("学生档案管理系统");toxy(48,8);printf("修改密码");toxy(45,10);printf("请输入旧密码：");for(;;)              //此处为输入密码不回显操作 {k=getch();       //输入k if(k=='\r')      //如果输入k为回车，则跳出循环 {break;}else if(k=='\b')  //如果输入k为删除键 {if(i>0)       //如若密码还没完全删除 {printf("\b");printf(" ");printf("\b");i--;}}else              //如果输入的k既不是删除键，也不是回车键 {password[i]=k;   //把k的值赋给_password[i]; printf("*");      //输出*号，保护用户隐私 i++;              //密码位数加1 }}password[i]='\0';i=0;toxy(45,12);printf("请输入新密码：");for(;;)              //此处为输入密码不回显操作 {k=getch();       //输入k if(k=='\r')      //如果输入k为回车，则跳出循环 {break;}else if(k=='\b')  //如果输入k为删除键 {if(i>0)       //如若密码还没完全删除 {printf("\b");printf(" ");printf("\b");i--;}}else              //如果输入的k既不是删除键，也不是回车键 {newpassword[i]=k;   //把k的值赋给_password[i]; printf("*");      //输出*号，保护用户隐私 i++;              //密码位数加1 }}newpassword[i]='\0';if(p!=NULL)                   //如果p不为空 {if(strcmp(p->password,password)==0)          //如果旧密码输入正确 {strcpy(p->password,newpassword);         //将旧密码改为新密码 break;                                   //跳出循环 }else                                         //如果旧密码输入错误 {system("cls");toxy(46,8);printf("--------------------------");toxy(46,9);printf("|                        |");toxy(46,10);printf("|  密码错误！是否继续？  |");toxy(46,11);printf("|                        |");toxy(46,12);printf("|  1.是           2.否   |");toxy(46,13);printf("|                        |");toxy(46,14);printf("--------------------------");while(1){t=getch();                              //输入t if(t=='1'){system("cls");break;}else if(t=='2')menu();}}}}while(1);       save_password(p);                         //永远为真 system("cls");toxy(45,10);printf("修改成功！即将返回主菜单...."); Sleep(500);menu();
} void save_password(passw p)   //将p所指向的内容保存到文件中 
{FILE *fp;fp=fopen("password","w");   //以只写的方式打开名为password的文件 if(fp==NULL){printf("cannot open file"); }if(fwrite(p,M,1,fp)!=1)   //将p所指向的一段大小为M的内容写入fp所指向的文件中 {printf("write error!"); }fclose(fp);   //关闭文件 
}Stup ss()     //将文件中的内容读出到链表中 
{FILE *fp;    //文件指针 Stup head=NULL,p,p1,pr=NULL;int n=0;fp=fopen("student","ab+");if(fp==NULL){printf("cannot open file");}while(!feof(fp))// feof函数可以检查文件读写位置标志是否移动到文件末尾，feof(fp)检查fp所指向的文件是否结束，如果是{                //则函数值为真，否则为假，即“!feof(fp)”为真，在while循环中检查 “!feof(fp)”为真，就执行循环体n++;p=(Stup)malloc(N); //向内存申请一段空间fread(p,N,1,fp); //从fp所指向的文件读入1个大小为M的数据，存储到p所指向的空间中 if(n==1){head=p;p1=p;}else{pr=p1;p1->next=p;p1=p;}}if(pr!=NULL)pr->next=NULL;else if(pr==NULL)head=NULL;fclose(fp);return head;
}void input_information()//录入信息 
{system("cls");color(15);int i=0,n;Stup p;toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("信息录入");toxy(45,8);printf("你需要录入多少个学生的信息？请输入：");scanf("%d",&n);getchar();	while(i!=n){system("cls");i++;p=(Stup)malloc(N);toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("信息录入");toxy(45,8);printf("请输入学生学号：");gets(p->number);toxy(45,9);printf("请输入学生姓名：");gets(p->name);toxy(45,10);printf("请输入学生性别(男或女)：");gets(p->sex);toxy(45,11);printf("请输入学生出生日期（年月日，以空格隔开）：");scanf("%d%d%d",&p->birtnday.year,&p->birtnday.month,&p->birtnday.day);getchar();toxy(45,12);printf("请输入c语言成绩：");scanf("%f",&p->score.c_language);getchar();toxy(45,13);printf("请输入高数成绩：");scanf("%f",&p->score.math);getchar();toxy(45,14);printf("请输入俄语成绩：");scanf("%f",&p->score.Russian);getchar();toxy(45,15);printf("请输入俄语听力成绩：");scanf("%f",&p->score.Russian_hearing);getchar();toxy(45,16);printf("请输入专业导论成绩：");scanf("%f",&p->score.professional);getchar();toxy(45,17);printf("请输入政治成绩：");scanf("%f",&p->score.politics);getchar();toxy(45,18);printf("请输入备注：");gets(p->remark);save_information(p);}toxy(48,19);printf("录入完毕！按任意键返回主菜单！");getch();
}void amend_information()  //修改信息 
{system("cls");         //清屏 color(11);Stup p,head;FILE *fp;int i=15,j=0,c; char number[10];   //学号char name[10],_name[10];   //姓名char sex[2];  //性别int year;   //年int month;  //月int day;    //日float c_language;  //c语言float math;  //高数float Russian;//俄语float Russian_hearing; //俄语听力float professional;  //专业导论float politics;  //政治 char remark[100];  //备注char ch,t;head=ss();p=head;do{system("cls");toxy(45,6);printf("-----学生档案管理系统-----");toxy(45,7);printf("修改信息");toxy(40,9);printf("请输入您要修改的信息：");gets(_name);toxy(20,8);printf("----------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别   出生--日期     c语言   高 数   俄 语   俄语听力   专业导论   政 治   备注");toxy(20,10);printf("----------------------------------------------------------------------------------------------");i=11;j=0;while(p!=NULL)   //将每个结点的p->num都赋为0，以免后面数据干扰 {p->num=0;p=p->next;}p=head;      //重新让p指向head while(p!=NULL){if(strcmp(p->name,_name)==0){toxy(18,i);j++;if(p->birtnday.month<10&&p->birtnday.day<10) printf("%d.%s    %s    %s     %d.0%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month<10&&p->birtnday.day>=10)printf("%d.%s    %s    %s     %d.0%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month>=10&&p->birtnday.day<10)printf("%d.%s    %s    %s     %d.%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);elseprintf("%d.%s    %s    %s     %d.%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);i++;p->num=j;      //给p->num赋值，即给满足搜索要求的结点编号 }p=p->next;}if(j==0)                   //如果j=0，即没有进入前面的搜索循环，也就是没有找到相应的信息 { toxy(50,i);printf("没有找到相应的信息！(按0返回，按1重新搜索)");while(1)               //死循环是为了防止除0和1的其他按键干扰 {ch=getch();     if(ch=='0'){menu();break;}else if(ch=='1'){break;}}if(ch=='1')     //如果输入的ch等于1，则结束本次循环 continue;}while(1){toxy(50,i);printf("请输入您要修改的信息的标号：");scanf("%d",&c);getchar();i++;  if(c<=j)              //如果c<=j，即输入正确 break;else if(c>j)         //否则，输入错误 {toxy(50,i);printf("没有找到您所要修改的信息，请重新输入！");i++;Sleep(500);      //暂停0.5秒 }}p=head;      //让p重新指向head，即第一个结点 while(p!=NULL&&p->num!=c)    //遍历链表，寻找满足要求的结点 {p=p->next;}if(p!=NULL)      //如果寻找成功，进入修改部分 {system("cls");    //清屏 toxy(45,8);printf("请输入学生学号：");gets(number);strcpy(p->number,number);toxy(45,9);printf("请输入学生姓名：");gets(name);strcpy(p->name,name);toxy(45,10);printf("请输入学生性别(男或女)：");gets(sex);strcpy(p->sex,sex);toxy(45,11);printf("请输入学生出生日期（年月日，以空格隔开）：");scanf("%d%d%d",&year,&month,&day);getchar();p->birtnday.year=year;p->birtnday.month=month;p->birtnday.day=day;toxy(45,12);printf("请输入c语言成绩：");scanf("%f",&c_language);getchar();p->score.c_language=c_language;toxy(45,13);printf("请输入高数成绩：");scanf("%f",&math);getchar();p->score.math=math;toxy(45,14);printf("请输入俄语成绩：");scanf("%f",&Russian);getchar();p->score.Russian=Russian;toxy(45,15);printf("请输入俄语听力成绩：");scanf("%f",&Russian_hearing);getchar();p->score.Russian_hearing=Russian_hearing;toxy(45,16);printf("请输入专业导论成绩：");scanf("%f",&professional);getchar();p->score.professional=professional;toxy(45,17);printf("请输入政治成绩：");scanf("%f",&politics);getchar();p->score.politics=politics;toxy(45,18);printf("请输入备注：");gets(remark);strcpy(p->remark,remark);toxy(46,16);printf("-------------------------");toxy(46,17);printf("|                       |");toxy(46,18);printf("|     是否确认修改？    |");toxy(46,19);printf("| 1.确认         2.取消 |");toxy(46,20);printf("|                       |");toxy(46,21);printf("-------------------------");while(1)    //死循环为防止其他按键干扰 {t=getch();if(t=='1')break;else if(t=='2'){menu();}} if(t=='1')  //如果t等于1，则跳出循环 {break; }}}while(1);p=head;     //p重新指向头节点 system("cls");toxy(44,12);printf("正在修改....");fp=fopen("student","wb");   //打开文件的同时清除文件内的内容 if(fp==NULL){printf("cannot open file");}while(p!=NULL){if(fwrite(p,N,1,fp)!=1)    //将p所指向的内容存入fp所指向的文件中 {printf("file write error\n");}p=p->next;}fclose(fp);     //关闭文件 Sleep(500);system("cls");toxy(44,12);printf("修改成功！正在自动跳转到主菜单....");Sleep(500);menu();
}void delete_information()  //删除信息 
{do{system("cls");color(12);char t;toxy(45,6);printf("-----学生档案管理系统-----");toxy(48,7);printf("信息删除");toxy(45,9);printf("1)  按学号查询删除");toxy(45,11);printf("2)  按姓名查询删除");toxy(48,13);printf("按0返回主菜单");t=getch();switch(t){case '0':menu();break;case '1':delete_number();break;case '2':delete_name();break;default :break;}}while(1);
}void delete_number()  //按学号查询删除 
{do{system("cls");color(10);char number[10];char t,c;int i=11,j=0;Stup head,p,pre=NULL ;FILE *fp;toxy(48,9);printf("请输入你要删除的学生的学号：");gets(number);head=ss();p=head;toxy(45,6);printf("-----学生档案管理系统-----"); toxy(20,8);printf("----------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别   出生--日期     c语言   高 数   俄 语   俄语听力   专业导论   政 治   备注");toxy(20,10);printf("----------------------------------------------------------------------------------------------");while(p!=NULL&&strcmp(p->number,number)!=0){pre=p;p=p->next;}if(p!=NULL){toxy(20,i);if(p->birtnday.month<10&&p->birtnday.day<10) printf("%s    %s    %s     %d.0%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month<10&&p->birtnday.day>=10)printf("%s    %s    %s     %d.0%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month>=10&&p->birtnday.day<10)printf("%s    %s    %s     %d.%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);elseprintf("%s    %s    %s     %d.%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);toxy(45,i+1);printf("1.删除        2.取消");while(1){c=getch();if(c=='1')break;else if(c=='2')delete_number();}if(pre==NULL)head=head->next;elsepre->next=p->next;system("cls"); toxy(45,10);printf("正在删除....");p=head->next;fp=fopen("student","wb");if(fp==NULL){printf("cannot open file"); }if(fwrite(head,N,1,fp)!=1){printf("write error");} fclose(fp);fp=fopen("student","ab");if(fp==NULL){printf("cannot open file"); }while(p!=NULL){if(fwrite(p,N,1,fp)!=1){printf("write error");} p=p->next;}fclose(fp);Sleep(500);system("cls");toxy(45,10);printf("删除成功！正在返回....");Sleep(500);delete_information(); }else if(p==NULL){toxy(48,i);printf("您输入的信息不存在！按0返回主菜单，1返回上一级菜单，2重新查找");while(1){t=getch();if(t=='0'){menu();}else if(t=='1'){delete_information();}else if(t=='2'){break;}}}free(p);}while(1);
}void delete_name()   //按姓名查询删除 
{do{system("cls");color(10);char name[10];char t,c;int i=11,j=0,key;Stup head,p,pre;FILE *fp;toxy(48,9);printf("请输入你要删除的学生的姓名：");gets(name);head=ss();p=head;while(p!=NULL){p->num=0;p=p->next;}p=head;toxy(45,6);printf("-----学生档案管理系统-----"); toxy(20,8);printf("----------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别   出生--日期     c语言   高 数   俄 语   俄语听力   专业导论   政 治   备注");toxy(20,10);printf("----------------------------------------------------------------------------------------------");while(p!=NULL){if(strcmp(p->name,name)==0){toxy(18,i);j++;if(p->birtnday.month<10&&p->birtnday.day<10) printf("%d.%s    %s    %s     %d.0%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month<10&&p->birtnday.day>=10)printf("%d.%s    %s    %s     %d.0%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month>=10&&p->birtnday.day<10)printf("%d.%s    %s    %s     %d.%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);elseprintf("%d.%s    %s    %s     %d.%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",j,p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);i++;p->num=j;}p=p->next;}if(j==0){toxy(48,i);printf("您输入的信息不存在！按0返回主菜单，1返回上一级菜单，2重新查找");while(1){t=getch();if(t=='0'){menu();}else if(t=='1'){delete_information();}else if(t=='2'){break;}}if(t=='2')continue;}while(1){toxy(50,i);printf("请输入您要删除的信息的标号：");scanf("%d",&key);getchar();i++;if(key<=j)              //如果c<=j，即输入正确 break;else if(key>j)         //否则，输入错误 {toxy(50,i);printf("没有找到您所要删除的信息，请重新输入！");i++;Sleep(500);      //暂停0.5秒 }}toxy(46,16);printf("-------------------------");toxy(46,17);printf("|                       |");toxy(46,18);printf("|       确认删除？      |");toxy(46,19);printf("| 1.确认         2.取消 |");toxy(46,20);printf("|                       |");toxy(46,21);printf("-------------------------");while(1){p=head;pre=NULL;c=getch();if(c=='1'){while(p!=NULL&&p->num!=key){pre=p;p=p->next;}if(p!=NULL){if(pre==NULL)head=head->next;elsepre->next=p->next;}free(p);break;}else if(c=='2')delete_number();}system("cls"); toxy(45,10);printf("正在删除....");fp=fopen("student","wb");if(fp==NULL){printf("cannot open file"); }if(head!=NULL&&fwrite(head,N,1,fp)!=1){printf("write error");} fclose(fp);if(head!=NULL){p=head->next;fp=fopen("student","ab");if(fp==NULL){printf("cannot open file"); }while(p!=NULL){if(fwrite(p,N,1,fp)!=1){printf("write error");} p=p->next;}fclose(fp);}Sleep(500);system("cls");toxy(45,10);printf("删除成功！正在返回....");Sleep(500);delete_information(); }while(1);
}void print_information()  //输出信息 
{system("cls");color(11);Stup head,p;int i=11;head=ss();p=head;toxy(45,6);printf("-----学生档案管理系统-----"); toxy(20,8);printf("----------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别   出生--日期     c语言   高 数   俄 语   俄语听力   专业导论   政 治   备注");toxy(20,10);printf("----------------------------------------------------------------------------------------------");while(p!=NULL){toxy(20,i);if(p->birtnday.month<10&&p->birtnday.day<10) printf("%s    %s    %s     %d.0%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month<10&&p->birtnday.day>=10)printf("%s    %s    %s     %d.0%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month>=10&&p->birtnday.day<10)printf("%s    %s    %s     %d.%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);elseprintf("%s    %s    %s     %d.%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);i++;p=p->next;}toxy(45,i);printf("按任意键返回主菜单！");getch();
}void find_information()  //查找信息 
{ do{system("cls");char t;color(10);toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("查找信息");toxy(48,9);printf("1)  学号查询");toxy(48,11);printf("2)  姓名查询");toxy(48,13);printf("按0返回主菜单");t=getch();switch(t){case '0':menu();break;case '1':find_number_information();break;case '2':find_name_information();break;default :break;}}while(1);
}void find_number_information()  //按学号查找 
{do{system("cls");color(10);char number[10];char t;int i=11,j=0;Stup head,p;toxy(48,9);printf("请输入你要查找的学生的学号：");gets(number);head=ss();p=head;toxy(45,6);printf("-----学生档案管理系统-----"); toxy(20,8);printf("----------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别   出生--日期     c语言   高 数   俄 语   俄语听力   专业导论   政 治   备注");toxy(20,10);printf("----------------------------------------------------------------------------------------------");while(p!=NULL){if(strcmp(p->number,number)==0){toxy(20,i);if(p->birtnday.month<10&&p->birtnday.day<10) printf("%s    %s    %s     %d.0%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month<10&&p->birtnday.day>=10)printf("%s    %s    %s     %d.0%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month>=10&&p->birtnday.day<10)printf("%s    %s    %s     %d.%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);elseprintf("%s    %s    %s     %d.%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);i++;j++;}p=p->next;}if(j==0){toxy(48,i);printf("您输入的信息不存在！");}toxy(48,i+1);printf("按0继续查找，按1返回");while(1){t=getch();if(t=='0'){break;}else if(t=='1'){find_information();}} }while(1);
}void find_name_information()   //按姓名查找 
{do{system("cls");color(10);char name[10];char t;int i=11,j=0;Stup head,p;toxy(48,9);printf("请输入你要查找的学生的姓名：");gets(name);head=ss();p=head;toxy(45,6);printf("-----学生档案管理系统-----"); toxy(20,8);printf("----------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别   出生--日期     c语言   高 数   俄 语   俄语听力   专业导论   政 治   备注");toxy(20,10);printf("----------------------------------------------------------------------------------------------");while(p!=NULL){if(strcmp(p->name,name)==0){toxy(20,i);if(p->birtnday.month<10&&p->birtnday.day<10) printf("%s    %s    %s     %d.0%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month<10&&p->birtnday.day>=10)printf("%s    %s    %s     %d.0%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);else if(p->birtnday.month>=10&&p->birtnday.day<10)printf("%s    %s    %s     %d.%d.0%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);elseprintf("%s    %s    %s     %d.%d.%d     %.2f   %.2f   %.2f     %.2f     %.2f     %.2f    %s\n",p->number,p->name,p->sex,p->birtnday.year,p->birtnday.month,p->birtnday.day,p->score.c_language,p->score.math,p->score.Russian,p->score.Russian_hearing,p->score.professional,p->score.politics,p->remark);i++;j++;}p=p->next;}if(j==0){toxy(48,i);printf("您输入的信息不存在！");}toxy(48,i+1);printf("按0继续查找，按1返回");while(1){t=getch();if(t=='0'){break;}else if(t=='1'){find_information();}} }while(1);
}void assignment()   //将链表的内容赋值给一个结构体数组 
{Stup head,p;head=ss();p=head;int i=0;while(p!=NULL){strcpy(total[i].number,p->number);strcpy(total[i].name,p->name);strcpy(total[i].sex,p->sex);total[i].c_language=p->score.c_language;total[i].math=p->score.math;total[i].Russian=p->score.Russian;total[i].Russian_hearing=p->score.Russian_hearing;total[i].professional=p->score.professional;total[i].politics=p->score.politics;total[i].sum=total[i].c_language+total[i].math+total[i].Russian+total[i].Russian_hearing+total[i].professional+total[i].politics;i++;p=p->next;}len=i;
}void statistics_information()   //数据统计 
{do{system("cls");color(6);char t;toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("数据统计");toxy(48,9);printf("1)  平均分");toxy(48,11);printf("2)  总分排名");toxy(48,13);printf("3)  各学科不及格人数");toxy(48,15);printf("4)  各科成绩分布分析"); toxy(45,17);printf("按0返回主菜单");t=getch();switch(t){case '0':menu();break;case '1':average_score();break;case '2':total_score_ranked();break;case '3':fail_numbers();break;case '4':grade_table();break;default :break;}}while(1);
}void average_score()   //平均分 
{system("cls");color(10);float sum_c=0,sum_math=0,sum_Russian=0,sum_Russian_hearing=0,sum_professional=0,sum_politics=0;float average_c,average_math,average_Russian,average_Russian_hearing,average_professional,average_politics;int i=0;Stup head,p;head=ss();p=head;while(p!=NULL){sum_c+=p->score.c_language;sum_math+=p->score.math;sum_Russian+=p->score.Russian;sum_Russian_hearing+=p->score.Russian_hearing;sum_professional+=p->score.professional;sum_politics+=p->score.politics;p=p->next;i++;}average_c=sum_c*1.0/i;average_math=sum_math*1.0/i;average_Russian=sum_Russian*1.0/i;average_Russian_hearing=sum_Russian_hearing*1.0/i;average_professional=sum_professional*1.0/i;average_politics=sum_politics*1.0/i;toxy(45,6);printf("-----学生档案管理系统-----");toxy(48,7);printf("各学科平均分");toxy(30,8);printf("----------------------------------------------------");toxy(30,9);printf("  c语言   高数   俄语   俄语听力   专业导论   政治");toxy(30,10);printf("----------------------------------------------------");toxy(30,11);printf("  %.2f   %.2f  %.2f    %.2f     %.2f    %.2f",average_c,average_math,average_Russian,average_Russian_hearing,average_professional,average_politics);toxy(45,12);printf("总人数为：%d",i);toxy(50,13);printf("按任意键返回主菜单");getch(); }void total_score_ranked()  //总分排名 
{system("cls");color(10);assignment();int j,k=11;qsort(total,len,sizeof(Total),cmp);   //快速排序 toxy(45,6);printf("-----学生档案管理系统-----");toxy(48,7);printf("总分排名");toxy(20,8);printf("--------------------------------------------------------------------------------------------");toxy(20,9);printf("学号   姓名   性别     c语言    高 数    俄 语   俄语听力   专业导论   政 治     总分   名次");toxy(20,10);printf("--------------------------------------------------------------------------------------------");for(j=0;j<len;j++){toxy(20,k);printf("%s     %s    %s      %.2f    %.2f    %.2f    %.2f      %.2f     %.2f    %.2f    %d\n",total[j].number,total[j].name,total[j].sex,total[j].c_language,total[j].math,total[j].Russian,total[j].Russian_hearing,total[j].professional,total[j].politics,total[j].sum,j+1);k++;}toxy(45,k);printf("按任意键返回主菜单");getch();
}void fail_numbers()   //各科不及格人数 
{system("cls");color(10);int fail_c=0,fail_math=0,fail_Russian=0,fail_Russian_hearing=0,fail_professional=0,fail_politics=0; int i;assignment();for(i=0;i<len;i++){if(total[i].c_language<60)fail_c++;if(total[i].math<60)fail_math++;if(total[i].Russian<60)fail_Russian++;if(total[i].Russian_hearing<60)fail_Russian_hearing++;if(total[i].professional<60)fail_professional++;if(total[i].politics<60)fail_politics++;}toxy(45,6);printf("-----学生档案管理系统-----");toxy(48,7);printf("各科不及格人数");toxy(30,8);printf("-----------------------------------------------------");toxy(30,9);printf("c语言    高 数    俄 语   俄语听力   专业导论   政 治");toxy(30,10);printf("-----------------------------------------------------");toxy(30,11);printf("%-10d%-10d%-10d%-10d%-10d%-10d",fail_c,fail_math,fail_Russian,fail_Russian_hearing,fail_professional,fail_politics);toxy(45,12);printf("请按任意键返回");getch();
}void grade_table()    //各科各分数段人数信息统计 
{do{system("cls");color(10);char t;toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("各分数段统计");toxy(48,9);printf("(1)  c语言");toxy(48,11);printf("(2)  高等数学");toxy(48,13);printf("(3)  俄语");toxy(48,15);printf("(4)  俄语听力");toxy(48,17);printf("(5)  专业导论");toxy(48,19);printf("(6)  政治");toxy(48,21);printf("按0返回上一级");t=getch();switch(t){case '0':statistics_information();break;case '1':analyze_c();break;case '2':analyze_math();break;case '3':analyze_Russian();break;case '4':analyze_Russian_hearing();break;case '5':analyze_professional();break;case '6':analyze_politics();break;default :break;}}while(1);
}void analyze_c()  //c语言 
{system("cls");color(11);assignment();qsort(total,len,sizeof(Total),cmp1);   //快速排序 int numbers_A=0,numbers_B=0,numbers_C=0,numbers_D=0,numbers_E=0;int i,j,k=12;for(i=0;i<len;i++){switch((int)(total[i].c_language/10)){case 10:case 9:numbers_A++;break;case 8:numbers_B++;break;case 7:numbers_C++;break;case 6:numbers_D++;break;default:numbers_E++;break;}}toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("c语言--各分数段统计");toxy(36,9);printf("-------------------------------------------------");toxy(36,10);printf("学号           姓名           性别           分数");toxy(36,11);printf("-------------------------------------------------");toxy(18,12);printf("90~100人数为：%d",numbers_A);for(j=0;j<numbers_A;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].c_language);k++;}k++;toxy(18,k);printf("80~90人数为：%d",numbers_B);for(j=numbers_A;j<numbers_A+numbers_B;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].c_language);k++;}k++;toxy(18,k);printf("70~80人数为：%d",numbers_C);for(j=numbers_A+numbers_B;j<numbers_A+numbers_B+numbers_C;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].c_language);k++;}k++;toxy(18,k);printf("60~70人数为：%d",numbers_D);for(j=numbers_A+numbers_B+numbers_C;j<numbers_A+numbers_B+numbers_C+numbers_D;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].c_language);k++;}k++;toxy(18,k);printf("0~60人数为：%d",numbers_E);for(j=numbers_A+numbers_B+numbers_C+numbers_D;j<len;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].c_language);k++;}toxy(48,k);printf("按任意键返回上一级");getch();
} void analyze_math()  //高数 
{system("cls");color(11);assignment();qsort(total,len,sizeof(Total),cmp2);   //快速排序 int numbers_A=0,numbers_B=0,numbers_C=0,numbers_D=0,numbers_E=0;int i,j,k=12;for(i=0;i<len;i++){switch((int)(total[i].math/10)){case 10:case 9:numbers_A++;break;case 8:numbers_B++;break;case 7:numbers_C++;break;case 6:numbers_D++;break;default:numbers_E++;break;}}toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("高数--各分数段统计");toxy(36,9);printf("-------------------------------------------------");toxy(36,10);printf("学号           姓名           性别           分数");toxy(36,11);printf("-------------------------------------------------");toxy(18,12);printf("90~100人数为：%d",numbers_A);for(j=0;j<numbers_A;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].math);k++;}k++;toxy(18,k);printf("80~90人数为：%d",numbers_B);for(j=numbers_A;j<numbers_A+numbers_B;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].math);k++;}k++;toxy(18,k);printf("70~80人数为：%d",numbers_C);for(j=numbers_A+numbers_B;j<numbers_A+numbers_B+numbers_C;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].math);k++;}k++;toxy(18,k);printf("60~70人数为：%d",numbers_D);for(j=numbers_A+numbers_B+numbers_C;j<numbers_A+numbers_B+numbers_C+numbers_D;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].math);k++;}k++;toxy(18,k);printf("0~60人数为：%d",numbers_E);for(j=numbers_A+numbers_B+numbers_C+numbers_D;j<len;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].math);k++;}toxy(48,k);printf("按任意键返回上一级");getch();
}void analyze_Russian()   //俄语 
{system("cls");color(11);assignment();qsort(total,len,sizeof(Total),cmp3);   //快速排序 int numbers_A=0,numbers_B=0,numbers_C=0,numbers_D=0,numbers_E=0;int i,j,k=12;for(i=0;i<len;i++){switch((int)(total[i].Russian/10)){case 10:case 9:numbers_A++;break;case 8:numbers_B++;break;case 7:numbers_C++;break;case 6:numbers_D++;break;default:numbers_E++;break;}}toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("俄语--各分数段统计");toxy(36,9);printf("-------------------------------------------------");toxy(36,10);printf("学号           姓名           性别           分数");toxy(36,11);printf("-------------------------------------------------");toxy(18,12);printf("90~100人数为：%d",numbers_A);for(j=0;j<numbers_A;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian);k++;}k++;toxy(18,k);printf("80~90人数为：%d",numbers_B);for(j=numbers_A;j<numbers_A+numbers_B;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian);k++;}k++;toxy(18,k);printf("70~80人数为：%d",numbers_C);for(j=numbers_A+numbers_B;j<numbers_A+numbers_B+numbers_C;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian);k++;}k++;toxy(18,k);printf("60~70人数为：%d",numbers_D);for(j=numbers_A+numbers_B+numbers_C;j<numbers_A+numbers_B+numbers_C+numbers_D;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian);k++;}k++;toxy(18,k);printf("0~60人数为：%d",numbers_E);for(j=numbers_A+numbers_B+numbers_C+numbers_D;j<len;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian);k++;}toxy(48,k);printf("按任意键返回上一级");getch();
}void analyze_Russian_hearing()  //俄语听力 
{system("cls");color(11);assignment();qsort(total,len,sizeof(Total),cmp4);   //快速排序 int numbers_A=0,numbers_B=0,numbers_C=0,numbers_D=0,numbers_E=0;int i,j,k=12;for(i=0;i<len;i++){switch((int)(total[i].Russian_hearing/10)){case 10:case 9:numbers_A++;break;case 8:numbers_B++;break;case 7:numbers_C++;break;case 6:numbers_D++;break;default:numbers_E++;break;}}toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("俄语听力--各分数段统计");toxy(36,9);printf("-------------------------------------------------");toxy(36,10);printf("学号           姓名           性别           分数");toxy(36,11);printf("-------------------------------------------------");toxy(18,12);printf("90~100人数为：%d",numbers_A);for(j=0;j<numbers_A;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian_hearing);k++;}k++;toxy(18,k);printf("80~90人数为：%d",numbers_B);for(j=numbers_A;j<numbers_A+numbers_B;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian_hearing);k++;}k++;toxy(18,k);printf("70~80人数为：%d",numbers_C);for(j=numbers_A+numbers_B;j<numbers_A+numbers_B+numbers_C;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian_hearing);k++;}k++;toxy(18,k);printf("60~70人数为：%d",numbers_D);for(j=numbers_A+numbers_B+numbers_C;j<numbers_A+numbers_B+numbers_C+numbers_D;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian_hearing);k++;}k++;toxy(18,k);printf("0~60人数为：%d",numbers_E);for(j=numbers_A+numbers_B+numbers_C+numbers_D;j<len;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].Russian_hearing);k++;}toxy(48,k);printf("按任意键返回上一级");getch();
}void analyze_professional()  //专业导论 
{system("cls");color(11);assignment();qsort(total,len,sizeof(Total),cmp5);   //快速排序 int numbers_A=0,numbers_B=0,numbers_C=0,numbers_D=0,numbers_E=0;int i,j,k=12;for(i=0;i<len;i++){switch((int)(total[i].professional/10)){case 10:case 9:numbers_A++;break;case 8:numbers_B++;break;case 7:numbers_C++;break;case 6:numbers_D++;break;default:numbers_E++;break;}}toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("专业导论--各分数段统计");toxy(36,9);printf("-------------------------------------------------");toxy(36,10);printf("学号           姓名           性别           分数");toxy(36,11);printf("-------------------------------------------------");toxy(18,12);printf("90~100人数为：%d",numbers_A);for(j=0;j<numbers_A;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].professional);k++;}k++;toxy(18,k);printf("80~90人数为：%d",numbers_B);for(j=numbers_A;j<numbers_A+numbers_B;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].professional);k++;}k++;toxy(18,k);printf("70~80人数为：%d",numbers_C);for(j=numbers_A+numbers_B;j<numbers_A+numbers_B+numbers_C;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].professional);k++;}k++;toxy(18,k);printf("60~70人数为：%d",numbers_D);for(j=numbers_A+numbers_B+numbers_C;j<numbers_A+numbers_B+numbers_C+numbers_D;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].professional);k++;}k++;toxy(18,k);printf("0~60人数为：%d",numbers_E);for(j=numbers_A+numbers_B+numbers_C+numbers_D;j<len;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].professional);k++;}toxy(48,k);printf("按任意键返回上一级");getch();
}void analyze_politics()  //政治 
{system("cls");color(11);assignment();qsort(total,len,sizeof(Total),cmp6);   //快速排序 int numbers_A=0,numbers_B=0,numbers_C=0,numbers_D=0,numbers_E=0;int i,j,k=12;for(i=0;i<len;i++){switch((int)(total[i].politics/10)){case 10:case 9:numbers_A++;break;case 8:numbers_B++;break;case 7:numbers_C++;break;case 6:numbers_D++;break;default:numbers_E++;break;}}toxy(45,6);printf("-----学生档案管理系统-----");toxy(50,7);printf("政治--各分数段统计");toxy(36,9);printf("-------------------------------------------------");toxy(36,10);printf("学号           姓名           性别           分数");toxy(36,11);printf("-------------------------------------------------");toxy(18,12);printf("90~100人数为：%d",numbers_A);for(j=0;j<numbers_A;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].politics);k++;}k++;toxy(18,k);printf("80~90人数为：%d",numbers_B);for(j=numbers_A;j<numbers_A+numbers_B;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].politics);k++;}k++;toxy(18,k);printf("70~80人数为：%d",numbers_C);for(j=numbers_A+numbers_B;j<numbers_A+numbers_B+numbers_C;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].politics);k++;}k++;toxy(18,k);printf("60~70人数为：%d",numbers_D);for(j=numbers_A+numbers_B+numbers_C;j<numbers_A+numbers_B+numbers_C+numbers_D;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].politics);k++;}k++;toxy(18,k);printf("0~60人数为：%d",numbers_E);for(j=numbers_A+numbers_B+numbers_C+numbers_D;j<len;j++){toxy(36,k);printf("%s             %s           %s             %.2f",total[j].number,total[j].name,total[j].sex,total[j].politics);k++;}toxy(48,k);printf("按任意键返回上一级");getch();
}void save_information(Stup p)   //将p所指向的内容写入文件中 
{FILE *fp;fp=fopen("student","ab+");if(fp==NULL){printf("cannot open file"); }if(fwrite(p,N,1,fp)!=1){printf("write error");} fclose(fp);
}void over()       //退出软件 
{char t;toxy(45,11);printf("--------------------------");toxy(45,12);printf("|    您确定要退出吗？    |");toxy(45,14);printf("|  1.确定      2.取消    |");toxy(45,15);printf("--------------------------");while(1){t=getch();         //输入tswitch(t){case '1':system("cls");color(6);toxy(48,10);printf("正在安全退出....");Sleep(1000);     //暂停1秒 system("cls");color(8);toxy(48,10);printf("已安全退出软件");toxy(48,12);printf("谢谢使用！");toxy(48,14);printf("by-by^_^");free(password_head);exit(0);  break; //终止程序 case '2':menu(); break;   //调用函数，进入菜单 default :break;}}
}main()  //简单明了的主函数^_^ 
{HideCursor();signin();  //登录界面 
}