标签：四则运算 print png image switch and while else include
题目：自动生成四则运算题目
#include "stdio.h"
#include"windows.h"
int right=0,wrong=0;
void add()
{
int a,b,c;
a=rand()%100;
b=rand()%100;
printf("请回答:%d+%d=",a,b);
scanf("%d",&c);
if(a+b!=c){printf("回答错误\n");wrong++;}
else {printf("回答正确\n");right++;}
}
void minu()
{
int a,b,c;
a=rand()%100;
b=rand()%100;
printf("请回答:%d-%d=",a,b);
scanf("%d",&c);
if(a-b!=c){printf("回答错误\n");wrong++;}
else {printf("回答正确\n");right++;}
}
void mul()
{
int a,b,c;
a=rand()%100;
b=rand()%100;
printf("请回答:%d*%d=",a,b);
scanf("%d",&c);
if(a*b!=c){printf("回答错误\n");wrong++;}
else {printf("回答正确\n");right++;}
}
void di()
{
int a,b,c;
a=rand()%100;
b=rand()%100;
printf("请回答:%d/%d=",a,b);
scanf("%d",&c);
if(a/b!=c){printf("回答错误\n");wrong++;}
else {printf("回答正确\n");right++;}
}
void main()
{
int choise,con=0;
printf("\n\n\t\t欢迎光临我的C语言四则运算程序\n");
system("pause");
system("cls");
while(1)
{
printf("\n\n\t\t请选择:\n加(输入1)\n减(输入2)\n乘(输入3)\n除(输入4)\n");
if(con==0)scanf("%d",&choise);
switch(choise)
{
case 1:add();break;
case 2:minu();break;
case 3:mul();break;
case 4:di();break;
}
printf("请问您想继续进行这个运算还是重新选择其他运算还是退出程序？\n继续(输入1)，重新(输入2)，退出(输入3)");
scanf("%d",&con);
if(con==1)con=1;
if(con==2)con=0;
if(con==3)break;
}
printf("您总做了%d个题，正确%d的道，错误%d道！\n",right+wrong,right,wrong);
system("pause");
}
结果：
标签：四则运算 print png image switch and while else include
原文地址：https://www.cnblogs.com/f135114/p/9752097.html
