#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include<string.h>
#include<time.h>
struct test
{
char ask[500];//选择题题目
char answer1[100];
char answer2[100];
char answer3[100];
char answer4[100];
char da[100];
int title[100];//随机抽题
char right[10];
} m[1000];
void menu()
{
printf(" ***********单项选择题标准化考试系统³*********\n");
printf(" *********************************************\n");
printf(" 1.试题录入***\n");
printf(" 2.查看所有试题***\n");
printf(" 3.试题抽取并答题***\n");
printf(" 4.判卷并打分***\n");
printf(" 5.退出系统***\n");
printf(" ********************************************\n");
}
int input(int cnt)
{
int i,count,choice=0;
printf("开始输入记录...\n");
count=cnt;
for(i=cnt;i<1000;i++)
{
printf("Continue?(1 Yes 0 No):");
scanf("%d",&choice);
getchar();
if(choice==0)
break;
else
if(choice==1)
{
printf("请输入第%d道题题目，题干和选项:\n",i+1);
printf("请输入题目:");
gets(m[i].ask);
printf("请输入选项A:");
gets(m[i].answer1);
printf("请输入选项B:");
gets(m[i].answer2);
printf("请输入选项C:");
gets(m[i].answer3);
printf("请输入选项D:");
gets(m[i].answer4);
printf("请输入答案:");
scanf("%c",&m[i].right);
cnt++;
}
}
if(count!=cnt)
printf("\n题目输入成功：");
else
printf("\n未输入记录！");
return cnt;
}
void list(int cnt)
{
int i;
printf("开始显示所有题目...");
printf("\n当前文件夹中所有记录显示如下：\n\n");
for(i=0;i<cnt;i++)
{
printf("第（%d）题目:%s\n",i+1,m[i].ask);
printf("A:%s\n",m[i].answer1);
printf("B:%s\n",m[i].answer2);
printf("C:%s\n",m[i].answer3);
printf("D:%s\n",m[i].answer4);
getchar();
}
printf("所有题目显示完成...");
}
void rande(int cnt)
{
int i,j,x=1,n,t;
int title[100];
printf("请输入你想抽取的题数：");
scanf("%d",&n);
if(n>cnt)
printf("您抽取的题目超过了题目总数");
else
{
for(i=1;i<=n;i++)
{
here:x=rand()%n;
title[i]=x;
for(j=0;j<i;j++)
if(title[i]==title[j])
{
goto here;
}
printf(" =============================================\n");
printf("输出抽取到的第%d题目",i);
printf("ÌâÄ¿:%s\n",m[x].ask);
printf("A:%s\n",m[x].answer1);
printf("B:%s\n",m[x].answer2);
printf("C:%s\n",m[x].answer3);
printf("D:%s\n",m[x].answer4);
printf("请输入你的答案：");
scanf("%s",m[x].da);
printf(" =============================================\n");
}
}
printf("´答题成功，按任意键返回主菜单...");
}
void ask(int cnt)
{
int i,n;
int count=0;
printf("请输入已经答题的数目：");
scanf("%d",&n);
for(i=0;i<cnt;i++)
{
if(!strcmp(m[i].da,m[i].right))
{
count++;
}
}
printf("你答对的总题数是%d\n",count);
printf("你最后的得分为%d",(100/n)*count);
system("pause");
}
int main()
{
FILE * fp;
int i=0,count=0,select;
fp=fopen("tiku.txt","a+");
if(fp==NULL)
{
printf("File open error!\n");
exit(0);
}
while(!feof(fp))
{
if(fread(&m[i],sizeof(struct test),1,fp)==1)
{
i++;
count++;
}
}
fclose(fp);
while(1)
{
printf("当前文件夹总共有%d条记录.\n",count);
menu();
printf("请输入你的选择：");
scanf("%d",&select);
switch(select)
{
case 1:
count=input(count);break;
case 2:
list(count);break;
case 3:
rande(count);break;
case 4:
ask(count);break;
case 5:
fp=fopen("tiku.txt","w");
printf("开始保存文件，按任意键继续........");
getchar();
getchar();
for(i=0;i<count;i++)
{
fwrite(&m[i],sizeof(struct test),1,fp);
}
fclose(fp);
printf("\n文件保存成功，按任意键退出系统.....");
getchar();
exit(0);
default:printf("输入错误，请重新输入.....");
}
}
}。