12作业

#include<stdio.h>
struct student
{
    char sno[10];
    char sname[20];
    int age;
}; 
int main()
{
    student class3[31];
    FILE *fp=fopen("e:\\input.txt","r");
    fscanf(fp,"%s%s%d",class3[0].sno,class3[0].sname,&class3[0].age);
    fclose(fp);
    fp=fopen("e:\\sanban.txt","m");
    printf("%s %s %d",class3[0].sno,class3[0].sname,class3[0].age);
    fclose(fp);    
    return 0;
}

#include<stdio.h>
#include<stdlib.h>
struct student
{
    char sno[10];
    char sname[20];
    int age;
}; 
void addStudent()
{
    student class3;
    int ch;
    FILE *fp=fopen("g:\\student.txt","a+");
    printf("学号：");
    scanf("%s",class3.sno);
    printf("姓名：");
    scanf("%s",class3.sname);
    printf("年龄：");
    scanf("%d",&class3.age);
    printf("%s    %s    %d\n",class3.sno,class3.sname,class3.age);
    printf("信息添加成功，是否继续添加学生信息(Y/N)");
    scanf("%s",&ch);
    do
    {
        printf("学号：");
        scanf("%s",class3.sno);
        printf("姓名：");
        scanf("%s",class3.sname);
        printf("年龄：");
        scanf("%d",&class3.age);
        printf("%s %s %d\n",class3.sno,class3.sname,class3.age);
        printf("信息添加成功，是否继续添加学生信息(Y/N)");
        scanf("%s",&ch);
    }
while(ch==‘y‘ || ch==‘Y‘);
int main()
{
    int i;
    if(a==1)
    {
    printf("学生信息管理系统\n");
    printf("1.添加学生信息\n");
    printf("请选择:\n");
    scanf("%d",&i);
    }
    return 0;
}