#include<stdio.h>
#include<math.h>
#include<windows.h>
int right=0;
int wrong=0;
void add()
{
float 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("回答正确!
");
right++;
}
else
{
printf("回答错误!
");
wrong++;
}
}
void minu()
{
float 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("回答正确!
");
right++;
}
else
{
printf("回答错误!
");
wrong++;
}
}
void mul()
{
float 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("回答正确!
");
right++;
}
else
{
printf("回答错误!
");
wrong++;
}
}
void di()
{
float 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("回答正确!
");
right++;
}
else
{
printf("回答错误!
");
wrong++;
}
}
void main()
{
int choise;
int con=0;
printf("
欢迎进入小学简易四则运算
");
printf("请选择:
");
printf(" 开始运算(请输入1)
");
printf(" 退出运算(请输入2)
");
scanf("%d",&con);
while(1)
{
if(con==1)
switch(choise=rand()%4)
{
case 0:
add();
break;
case 1:
minu();
break;
case 2:
mul();
break;
case 3:
di();
break;
default:
return -1;
}
else
if(con==2)
break;
else
printf("抱歉!,你输入的指令有误!请重新输入!
");
printf("
继续运算?(请输入1)
");
printf("
退出运算?(请输入2)
");
scanf("%d",&con);
if(con==1)
con=1;
else if(con==2)
break;
else
printf("抱歉!,你输入的指令有误!请重新输入!
");
}
printf("您总共完成了 %d 道题
正确 %d 道
错误 %d 道
",right+wrong,right,wrong);
}