我大作业运行不了
[local]1[/local]//课程设计:题目学生信息管理程序
/*
基本要求：
1．要求实现学生信息的查找、添加、删除、修改、浏览、保存、从文件读取、查看奖学金信息8个功能，每个功能模块均能实现随时从模块中退出，而且可以选择不同的方式实现所需功能，从而完成一个学生管理系统所需功能。
2．要使用结构体来实现对学生信息的存储。
3．可使用链表或数组来实现对学生信息的查找、添加、删除、修改、浏览等操作。
4．使用文件完成数据的存储与读取，要求每次运行某个功能模块时将数据读入结构体中，并给用户提供保存选项，可以将结构体中的数据保存在文件中。
5．系统制作完成后应实现类似下图所示界面。
*/
//步骤一：现学生信息的查找、添加、删除、修改、浏览、保存、查看奖学金信息:
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
//结构体
struct Score{
float math;
float english;
float algebra;
float c_language;
float total;
};
struct Student{
long num;
char name[80];
char sex;
struct Score score;
char scholarship;
struct Student *next;
}lyj;
typedef Student s;
#define size sizeof(s)
int main();
//查找函数
void seek(FILE*fp){
int n;
s *buffer;
buffer=(s*)malloc(1000);
n=fread(buffer,size,50,fp);
free(buffer);
buffer=(s*)malloc(size*n);//
fread(buffer,size,n,fp);
s*head=buffer;
int t;
printf("*******************************************************n");
printf("tt请选择查找方式：ntt1、按学号；ntt2、按姓名;ntt3、按成绩;ntt4、返回上级。n");
printf("*******************************************************n请选择：n");
scanf("%d",&t);
switch(t){
case 1:{
long n;
struct Student *p=head;
printf("please input the student number:");
scanf("%ld",&n);
while(p!=NULL&&p->num!=n)p=p->next;
if(p!=NULL)
printf("student num:%ld;nname:%s;nsex:%c;nscore:nmath:%f,nenglish:%f,nalgebra:%f,nc_language:%f,ntotal:%f;n",
p->num,p->name,p->sex,p->score.math,p->score.english,p->score.algebra,p->score.c_language,p->score.total);
//type 'Score' does not have an overloaded member 'operator ->'
printf("there is all;");
}break;
case 2:{
char a[40];
struct Student *p=head;
printf("please input the student's name:");
gets(a);
while(p!=NULL){//考虑到同名，做不同处理；
if(strcmp(p->name,a)==0)printf("student num:%ld;nname:%s;nsex:%c;nscore:nmath:%f,nenglish:%f,nalgebra:%f,nc_language:%f,ntotal:%f;n",
p->num,p->name,p->sex,p->score.math,p->score.english,p->score.algebra,p->score.c_language,p->score.total);
p=p->next;
}
printf("there is all;");
}break;
case 3:{
int n1,n2;
struct Student *p=head;
printf("please input the tatle score tanges:(like '10 to 20''成绩 to 成绩')");
//printf("please input the tatle score tanges:like "10 to 20""成绩 to 成绩"");
scanf("%d to %d",&n1,&n2);
while(p!=NULL){
if(p->score.total>=n1&&p->score.total<=n2)printf("student num:%ld;nname:%s;nsex:%c;nscore:nmath:%f,nenglish:%f,nalgebra:%f,nc_language:%f,ntotal:%f;n",
p->num,p->name,p->sex,p->score.math,p->score.english,p->score.algebra,p->score.c_language,p->score.total);
p=p->next;
}
}break;
case 4:main();break;// error C2065: 'main' : undeclared identifier
printf("there is all;");
default:printf("it's a illeagle input,please input again.");seek(fp);//again
}
free(buffer);fclose(fp);
}
//添加
void add(FILE*fp){//fp=fopen(,"w+a+r")
int n;
s*buffer;
buffer=(s*)malloc(1000);
n=fread(buffer,size,50,fp);
free(buffer);
buffer=(s*)malloc(size*n);//
fread(buffer,size,n,fp);
s*wei=buffer;while(wei->next!=NULL)wei=wei->next;
s*p;
while(getchar()!='N'){
wei->next=p=(s*)malloc(size);p->next=NULL;//
//input
printf("please input the imformation witch you want to add in the fill.nStudent num:");
scanf("%s",&p->name);
printf("sex:");fflush(stdin);
scanf("%c",&p->sex);
printf("num:");
scanf("%ld",&p->num);
s *tem1=buffer,*tem2=p;
while(tem1!=NULL){
if(tem1->num==tem2->num){
printf("学号已经存在，请重新输入；");
scanf("%d",&tem2->num);
tem1=buffer,tem2=p;
}
tem1=tem1->next;
}
printf("score.algebra:");
scanf("%f",&p->score.algebra);
printf("score.c_language:");
scanf("%f",&p->score.c_language);
printf("score.english:");
scanf("%f",&p->score.english);
printf("score.math:");
scanf("%f",&p->score.math);
p->score.total=p->score.algebra+p->score.c_language+p->score.english+p->score.math;
if(p->score.total>=360)p->scholarship='Y';
else p->scholarship='N';
//
n++;
s *totbuf=(s*)malloc(size*n);
s *b=totbuf,*a=buffer;
while(a!=NULL){
//word+excel
strcmp(b->name,a->name);
b->sex= a->sex;
b->num= a->num;
b->score.algebra= a->score.algebra;
b->score.c_language= a->score.c_language;
b->score.english= a->score.english;
b->score.math= a->score.math;
b->score.total= a->score.total;
b->scholarship= a->scholarship;
}
a=p;
strcmp(b->name,a->name);
b->sex= a->sex;
b->num= a->num;
b->score.algebra= a->score.algebra;
b->score.c_language= a->score.c_language;
b->score.english= a->score.english;
b->score.math= a->score.math;
b->score.total= a->score.total;
b->scholarship= a->scholarship;
//word+excel
free(buffer);
buffer=totbuf;
b=p;p=p->next;
free(b);
// printf("Would you want to continue to add?Y/Nn");
}
if(fwrite(buffer,size,50,fp))puts("Save success!");//保存并检查。
free(buffer);
fclose(fp);
getchar();main();
}
//删除
void del(FILE*fp){
int n;
s *buffer;
buffer=(s*)malloc(1000);
n=fread(buffer,size,50,fp);
free(buffer);
buffer=(s*)malloc(size*n);//
printf("*******************************************************n");
printf("tt请输入所删除信息对应的学号n");
printf("*******************************************************n请选择：n");
long t;
scanf("%ld",&t);
s *a=buffer,*b=buffer;
if(a->num!=t){
a=a->next;
while(a->next!=NULL){
if(a->num==t)break;
a=a->next;
b=b->next;
}
}
if(a==NULL)printf("该学号不存在。n");
else{
b->next=a->next;
free(a);
}
n--;
s *totbuf=(s*)malloc(size*n);
while(a!=NULL){
//word+excel
strcmp(b->name,a->name);
b->sex= a->sex;
b->num= a->num;
b->score.algebra= a->score.algebra;
b->score.c_language= a->score.c_language;
b->score.english= a->score.english;
b->score.math= a->score.math;
b->score.total= a->score.total;
b->scholarship= a->scholarship;
}
//word+excel
if(fwrite(totbuf,size,50,fp))puts("Save success!");//保存并检查。
fclose(fp);
free(buffer);
free(totbuf);
getchar();main();
}
//浏览
void read(FILE*fp){
s*p;
int n;
p=(s*)malloc(1000);
n=fread(p,size,50,fp);
free(p);
p=(s*)malloc(size*n);
while(p!=NULL){
printf("student num:%ld;nname:%s;nsex:%c;nscore:nmath:%f,nenglish:%f,nalgebra:%f,nc_language:%f,ntotal:%f;n",
p->num,p->name,p->sex,p->score.math,p->score.english,p->score.algebra,p->score.c_language,p->score.total);
p=p->next;
}
free(p);fclose(fp);getchar();main();
}
//修改学生信息
void change(FILE*fp){
int n;
s *buffer;
buffer=(s*)malloc(1000);
n=fread(buffer,size,50,fp);
free(buffer);
buffer=(s*)malloc(size*n);//
printf("*******************************************************n");
printf("tt请输入所修改信息对应的学号n");
printf("*******************************************************n请选择：n");
long t;
scanf("%ld",&t);
s *a=buffer;
while(a->next!=NULL){
if(a->num==t)break;
a=a->next;
}
if(a==NULL)printf("该学号不存在。n");
else{
////////////////////
printf("please input the imformation witch you want to charge.nStudent num:");
printf("*******************************************************n");
printf("tt请选择修改内容：ntt1、姓名；ntt2、性别ntt;3、学号;ntt4、成绩；ntt4、取消；n");
printf("*******************************************************n请选择：n");
int t;
scanf("%d",&t);
s*p=buffer; s *tem1=buffer,*tem2=p;
switch(t){
case 1:
printf("name:");
scanf("%s",&p->name);
break;
case 2:
printf("sex（f/m）:");
fflush(stdin);
scanf("%c",&p->sex);
break;
case 3:
printf("num:");
scanf("%ld",&p->num);
while(tem1!=NULL){
if(tem1->num==tem2->num){
printf("学号已经存在，请重新输入；");
scanf("%ld",&tem2->num);
tem1=buffer;
}
tem1=tem1->next;
}break;
case 4:
printf("score.algebra:");
scanf("%f",&p->score.algebra);
printf("score.c_language:");
scanf("%f",&p->score.c_language);
printf("score.english:");
scanf("%f",&p->score.english);
printf("score.math:");
scanf("%f",&p->score.math);
p->score.total=p->score.algebra+p->score.c_language+p->score.english+p->score.math;
if(p->score.total>=360)p->scholarship='Y';
else p->scholarship='N';
break;/////////////////////////////////
default:break;
}
}
if(fwrite(buffer,size,50,fp))puts("Save success!");//保存并检查。
fclose(fp);
free(buffer);
getchar();main();
}
//查看奖学金信息
void scls(FILE*fp){
int n;
s *buffer;
buffer=(s*)malloc(1000);
n=fread(buffer,size,50,fp);
free(buffer);
buffer=(s*)malloc(size*n);//
printf("*******************************************************n");
printf("tt请输入查询学号n");
printf("*******************************************************n请选择：n");
long t;
scanf("%ld",&t);
s*p=buffer;
while(p!=NULL){
if(p->num==t){
printf("奖学金如下情况为：n");
printf("%c",p->scholarship);
}
p=p->next;
}
if(p==NULL)printf("查无此人。");
free(buffer);
fclose(fp);
getchar();main();
}
int main(){
system("cls");
fflush(stdin);
FILE *fp;
printf("*******************************************************n");
printf("tt 学生信息管理系统ntt1、查询成绩信息；ntt2、添加学生信息;ntt3、删除学生信息;ntt4、浏览全部学生信息；ntt5、修改学生信息；ntt6、查询奖学金，ntt6、退出。n");
printf("*******************************************************n请选择：n");
int t;
scanf("%d",&t);
switch(t){
case 1:fp=fopen("FILE_LYJ","rb");
seek(fp);
break;
case 2:fp=fopen("FILE_LYJ","wb");
add(fp);
break;
case 3:fp=fopen("FILE_LYJ","wb");
del(fp);
break;
case 4:fp=fopen("FILE_LYJ","rb");
read(fp);
break;
case 5:fp=fopen("FILE_LYJ","wb");
change(fp);
break;
case 6:fp=fopen("FILE_LYJ","rb");
scls(fp);
break;
default:break;
}/**/
/* fp=fopen("FILE_LYJ","wb");//崩溃，前面因为没有加引号，一直不能通过；百度坑我；
s*p=&lyj;//第一次写入，生成文件；
scanf("%s",&p->name);
printf("sex:");fflush(stdin);
scanf("%c",&p->sex);
printf("num:");
scanf("%ld",&p->num);
printf("score.algebra:");
scanf("%f",&p->score.algebra);
printf("score.c_language:");
scanf("%f",&p->score.c_language);
printf("score.english:");
scanf("%f",&p->score.english);
printf("score.math:");
scanf("%f",&p->score.math);p->next=NULL;
p->score.total=p->score.algebra+p->score.c_language+p->score.english+p->score.math;
if(p->score.total>=360)p->scholarship='Y';
else p->scholarship='N';if(int n=fwrite(&lyj,size,1,fp))printf("%d",n);
fclose(fp);*/
return 0;
}
