学生信息管理系统C语言版

1、【精品文档】如有侵权，请联系网站删除，仅供学习与交流学生信息管理系统C语言版.精品文档./交流学习/QQ:1194758555#include<stdio.h>#include<string.h>#include<stdlib.h>#include<ctype.h>#include<windows.h>int k,n;struct student double yuwen; double shuxue; double yingyu; double zong; double pingjun; char name20; char num2

2、0; stu1000;void jiazai(struct student stu,int *num1);void baocun(struct student stu,int n);void find(struct student stu,int n);int findnum(struct student stu,int n,char *num);/查找学号；void shanchu(struct student stu,int *num1);void shanchuyi(struct student stu,int *num1);/删除一条记录;void shanchuquanbu(stru

3、ct student stu,int *num1);void tianjiayi(struct student stu,int i);/添加一记录；void tianjia(struct student stu,int *num1);/添加记录；void xiugai(struct student stu,int n);/修改一条记录；void output(struct student stu,int n,int x);/打印信息；void paixu(struct student stu,int n);/排序；int jianchaxuehao(struct student stu,cha

4、r *num);/检查学号的合法性；int jianchachengji(double num);/检查成绩的合法性；void outputone(struct student *stu,int i,int x);/输出一条信息void caidan();int main() int q; jiazai(stu,&n); caidan(); scanf("%d",&q); while(q>6) printf("输入错误请重新输入n请输入0-6的数字n"); scanf("%d",&q); Sleep(30

5、0); system("cls"); switch(q) case 1 : tianjia(stu,&n); break; case 2: xiugai(stu,n); break; case 3: paixu(stu,n); break; case 4: find(stu,n); break; case 5: shanchu(stu,&n); break; case 6: output(stu,n,0); break; case 0: exit(0); return 0;void caidan() printf("n"); printf

6、("欢迎进入学生信息管理系统n"); printf("n"); printf(" 1添加学生成绩 n"); printf("n"); printf(" 2修改学生成绩 n"); printf("n"); printf(" 3排序 n"); printf("n"); printf(" 4查找 n"); printf("n"); printf(" 5删除 n"); printf(&

7、quot;n"); printf(" 6输出 n"); printf("n"); printf(" 0退出 n"); printf("n"); printf("n"); printf("请输入选择:n");void jiazai(struct student stu,int *num1) FILE *fp; int i; if(fp=fopen("d:student.dat","r")=NULL) *num1=0; retur

8、n; for(i=0; fread(&stui,sizeof(struct student),1,fp)!=0; i+) *num1=i; fclose(fp);void paixu(struct student stu,int n) int xuehao(const void *a,const void *b); int yuwen(const void *a,const void *b); int shuxue(const void *a,const void *b); int yingyu(const void *a,const void *b); int zongchengji

9、(const void *a,const void *b); int (*cmp)(const void *a,const void *b)= xuehao,yuwen,shuxue,yingyu,zongchengji; int a; printf("n"); printf(" 欢迎进入学生信息排序页面 n"); printf("n"); printf("n"); printf(" 0:按学号降序排序 n"); printf("n"); printf(" 1:按语

10、文成绩降序排序 n"); printf("n"); printf(" 2:按数学成绩降序排序 n"); printf("n"); printf(" 3:按英语成绩降序排序 n"); printf("n"); printf(" 4:安总成绩降序排序 n"); printf("n"); printf("请输入选择:n"); scanf("%d",&a); Sleep(300); system("

11、;cls"); qsort(stu,n,sizeof(stu0),cmpa); output(stu,n,0);int xuehao(const void *a,const void *b) if(strcmp(struct student *)a)->num,(struct student *)b)->num)>0) return -1; else return 1;int yuwen(const void *a,const void *b) return (struct student *)a)->yuwen < (struct student *)

12、b)->yuwen ? 1 : -1;int shuxue(const void *a,const void *b) return (struct student *)a)->shuxue < (struct student *)b)->shuxue ? 1 : -1;int yingyu(const void *a,const void *b) return (struct student *)a)->yingyu < (struct student *)b)->yingyu ? 1 : -1;int zongchengji(const void *

13、a,const void *b) return (struct student *)a)->zong < (struct student *)b)->zong ? 1 : -1;void shanchuyi(struct student stu,int *num1) int i,in,c; char y20; FILE *fp; char str20; printf("n"); printf(" 欢迎进入学生信息删除页面 n"); printf("n"); printf("请输入需要删除的学号n"

14、); scanf("%s",str); c=jianchaxuehao(stu,str); while(c=0) printf("输入的学号不合法请重新输入n"); scanf("%s",str); c=jianchaxuehao(stu,str); Sleep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息删除页面 n"); printf("n"); in=findnum(stu,*num1,str

15、); while(in<0) printf("该学生的信息不存在n"); printf("重新输入(yes-y)返回主菜单（no-n)n"); scanf("%s",y); while(strcmp(y,"y")&&strcmp(y,"n") printf("请输入y或nn"); scanf("%s",y); if(!strcmp(y,"n") Sleep(300); system("cls")

16、; main(); Sleep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息删除页面 n"); printf("n"); printf("请输入需要删除的学号n"); scanf("%s",str); in=findnum(stu,*num1,str); for(i=in; i<*num1-1; i+) stui=stui+1; (*num1)-; if(fp=fopen("d:student.dat&

17、quot;,"w")=NULL) printf("打开失败n"); exit(0); Sleep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息删除页面 n"); printf("n"); printf("删除成功n"); baocun(stu,*num1); printf("继续删除（yes-y)返回上主菜单（no-n)n"); getchar(); scanf("%s

18、",y); while(strcmp(y,"y")&&strcmp(y,"n") printf("请输入y或nn"); getchar(); scanf("%s",y); Sleep(300); system("cls"); if(!strcmp(y,"n") main(); if(!strcmp(y,"y") shanchuyi(stu,num1);void shanchuquanbu(struct student stu,in

19、t *num1) char y20,a20; FILE *fp; printf("n"); printf(" 欢迎进入学生信息删除页面 n"); printf("n"); printf("是否全部删除？(yes-y)返回主菜单（no-n)n"); scanf("%s",y); while(strcmp(y,"y")&&strcmp(y,"n") printf("请输入y或nn"); scanf("%s"

20、;,y); Sleep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息删除页面 n"); printf("n"); if(!strcmp(y,"y") fp=fopen("d:student.dat","w"); *num1=0; printf("删除完成n"); fclose(fp); printf("返回主菜单(yes-y)结束(no-n)n"); scan

21、f("%s",a); while(strcmp(a,"y")&&strcmp(a,"n") printf("请输入y或nn"); scanf("%s",a); Sleep(300); system("cls"); if(!strcmp(a,"y") main(); else Sleep(300); system("cls"); return; else Sleep(300); system("cls"

22、); main();void shanchu(struct student stu,int *num1) int q; printf("n"); printf("删除n"); printf("n"); printf("1:删除指定信息n"); printf("n"); printf("2:删除全部信息n"); printf("n"); printf("n"); printf("请输入选择:n"); getchar()

23、; scanf("%d",&q); system("cls"); switch(q) case 1: shanchuyi(stu,num1); break; case 2: shanchuquanbu(stu,num1); break;int findnum(struct student stu,int n,char *num) int i; for(i=0; i<n; i+) if(strcmp(stui.num,num)=0) return i; return -1;void baocun(struct student stu,int

24、n) FILE *fp; if(fp=fopen("d:student.dat","w")=NULL) printf("打开失败n"); exit(0); fwrite(stu,(n+1)*sizeof(stu0),1,fp); fclose(fp);void output(struct student stu,int n,int x) int i; char y20; if(n>0) printf("n"); printf("%-10s%-6s%-6s%-6s%-6s%-6s%-6s",

25、"学号","姓名","语文","数学","英语","平均","总成绩n"); /printf("n"); for(i=0; i<n; i+) outputone(&stui,n,x); printf("n"); if(x) char q10; printf("返回主菜单（yes-y）返回上级菜单（no-n）n"); scanf("%s",q); while(str

26、cmp(q,"y")&&strcmp(q,"n") printf("请输入y或nn"); scanf("%s",q); Sleep(300); system("cls"); if(!strcmp(q,"y") main(); while(!strcmp(q,"n") paixu(stu,n); else printf("没有任何记录，请先添加信息n"); printf("返回主菜单（yes-y)结束（no-n)

27、n"); scanf("%s",y); while(strcmp(y,"y")&&strcmp(y,"n") printf("请输入y或nn"); scanf("%s",y); Sleep(300); system("cls"); if(!strcmp(y,"y") main(); else return;void outputone(struct student *stu,int n,int x) if(!x) printf(&

28、quot;n"); printf("%-10s%-6s%-6.2lf%-6.2lf%-6.2lf%-6.2lf%-6.2lfn",stu->num,stu->name,stu->yuwen,stu->shuxue,stu->yingyu,stu->pingjun,stu->zong); else printf("n"); printf("%-8s%-6s%-6s%-6s%-6s%-6s%-6s","学号","姓名","语文"

29、,"数学","英语","平均","总成绩n"); printf("n"); printf("%-8s%-6s%-6.1lf%-6.1lf%-6.1lf%-6.1lf%-6.1lfn",stu->num,stu->name,stu->yuwen,stu->shuxue,stu->yingyu,stu->pingjun,stu->zong); printf("n");void tianjiayi(struct stud

30、ent stu,int i) int a,b; printf("请输入学生学号n"); getchar(); scanf("%s",stui.num); a=jianchaxuehao(stu,stui.num); while(a=0|a=2) if(a=0) printf("输入的学号不合法请重新输入n"); if(a=2) printf("输入的学号与已有的重复请重新输入n"); scanf("%s",stui.num); a=jianchaxuehao(stu,stui.num); Sle

31、ep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息添加页面 n"); printf("n"); printf("请输入该学生姓名n"); scanf("%s",); printf("请输入语文成绩n"); scanf("%lf",&stui.yuwen); b=jianchachengji(stui.yuwen); while(b=0) printf(&

32、quot;输入错误请重新输入n"); scanf("%lf",&stui.yuwen); b=jianchachengji(stui.yuwen); printf("请输入数学成绩n"); scanf("%lf",&stui.shuxue); b=jianchachengji(stui.shuxue); while(b=0) printf("输入错误请重新输入n"); scanf("%lf",&stui.shuxue); b=jianchachengji(stu

33、i.shuxue); printf("请输入英语成绩n"); scanf("%lf",&stui.yingyu); b=jianchachengji(stui.yingyu); while(b=0) printf("输入错误请重新输入n"); scanf("%lf",&stui.yingyu); b=jianchachengji(stui.yingyu); stui.pingjun=(stui.yuwen+stui.shuxue+stui.yingyu)/3; stui.zong=stui.yuwe

34、n+stui.shuxue+stui.yingyu;void tianjia(struct student stu,int *num1) char p10="y",y10; printf("n"); printf(" 欢迎进入学生信息添加页面 n"); printf("n"); while(!strcmp(p,"y") tianjiayi(stu,*num1); (*num1)+=1; printf("是否继续添加(yes-y,no-n)n"); getchar(); sca

35、nf("%s",p); while(strcmp(p,"n")&&strcmp(p,"y") printf("请输入y或nn"); getchar(); scanf("%s",p); Sleep(300); system("cls"); baocun(stu,*num1); printf("返回主菜单（yes-y)结束（no-n)n"); getchar(); scanf("%s",y); while(strcmp(y,

36、"n")&&strcmp(y,"y") printf("请输入y或nn"); getchar(); scanf("%s",y); if(!strcmp(y,"y") Sleep(300); system("cls"); main(); else return;void xiugai(struct student stu,int n) int in,b,c; char a10,q10; char str20,y10; printf("n");

37、 printf(" 欢迎进入学生信息修改页面 n"); printf("n"); printf("请输入要修改学生的学号n"); getchar(); scanf("%s",str); c=jianchaxuehao(stu,str); in=findnum(stu,n,str); while(c=0|in<0) if(in<0|(in<0&&c=1) printf("此条信息不存在n"); if(c=0) printf("输入不合法请重新输入n&qu

38、ot;); printf("重新输入(yes-y)返回主菜单（no-n)n"); scanf("%s",a); while(strcmp(a,"y")&&strcmp(a,"n") printf("请输入y或nn"); getchar(); scanf("%s",a); Sleep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息修改页面 n");

39、 printf("n"); if(!strcmp(a,"n") Sleep(300); system("cls"); main(); printf("请输入要修改学生的学号n"); scanf("%s",str); c=jianchaxuehao(stu,str); in=findnum(stu,n,str); printf("修改前的信息如下:n"); outputone(&stuin,n,1); printf("是否修改姓?(yes-y,no-n)n&q

40、uot;); getchar(); scanf("%s",y); while(strcmp(y,"y")&&strcmp(y,"n") printf("请输入y或nn"); getchar(); scanf("%s",y); Sleep(300); system("cls"); printf("n"); printf(" 欢迎进入学生信息修改页面 n"); printf("n"); if(!strcm

41、p(y,"y") printf("请输入姓名n"); scanf("%s",); printf("是否修改%s的成绩?(yes-y)返回主菜单(no-n)n",stuin.num); /getchar(); scanf("%s",q); while(strcmp(q,"y")&&strcmp(q,"n") printf("请输入y或nn"); getchar(); scanf("%s&quo

42、t;,q); if(!strcmp(q,"y") printf("请输入%s的语文成绩n",stuin.num); scanf("%lf",&stuin.yuwen); b=jianchachengji(stuin.yuwen); while(b=0) printf("输入错误请重新输入n"); scanf("%lf",&stuin.yuwen); b=jianchachengji(stuin.yuwen); printf("请输入%s的数学成绩n",stui

43、n.num); scanf("%lf",&stuin.shuxue); b=jianchachengji(stuin.shuxue); while(b=0) printf("输入错误请重新输入n"); scanf("%lf",&stuin.shuxue); b=jianchachengji(stuin.shuxue); printf("请输入%s的英语成绩n",stuin.num); scanf("%lf",&stuin.yingyu); b=jianchachengji

44、(stuin.yingyu); while(b=0) printf("输入错误请重新输入n"); scanf("%lf",&stuin.yingyu); b=jianchachengji(stuin.yingyu); if(!strcmp(q,"n") Sleep(300); system("cls"); main(); baocun(stu,n); printf("添加成功n返回主菜单（yes-y)结束（no-n)n"); getchar(); scanf("%s"

45、,y); while(strcmp(y,"y")&&strcmp(y,"n") printf("请输入y或nn"); getchar(); scanf("%s",y); if(!strcmp(y,"y") Sleep(300); system("cls"); main(); else return;void find(struct student stu,int n) int in,c; char str20,y20,q20; printf("n&q

46、uot;); printf(" 欢迎进入学生信息查询页面 n"); printf("n"); printf("请输入需要查询的学号n"); scanf("%s",str); c=jianchaxuehao(stu,str); while(c=0) printf("输入的学号不合法请重新输入n"); scanf("%s",str); c=jianchaxuehao(stu,str); Sleep(300); system("cls"); printf("n"); printf(&qu