#include<stdio.h>
#include<stdlib.h>
#include<time.h>
void srand(unsigned);//随机生成不同的数
void main()
{
int n,i,a,b,c,d,e,f,g,h,j;
printf("****************************欢迎使用！************************\n");
printf("\n");
printf("1.加法运算\n");
printf("2.减法运算\n");
printf("3.乘法运算\n");
printf("4.除法运算\n");
printf("0.退出程序\n");
printf("***************************************************************\n");
printf("请选择运算类型:");
scanf("%d", &n);
while(n<0||n>4)
{
printf("输入错误,请重新输入:\n");
scanf("%d",&n);
}
switch(n)
{
case 1:
{
printf("***************************************************************\n");
printf("5.一位数加一位数\n");
printf("6.一位数加两位数\n");
printf("7.两位数加两位数\n");
printf("***************************************************************\n");
printf("请输入题型:");
scanf("%d",&i);
while(i<5||i>7)
{
printf("输入错误,请重新输入:\n");
scanf("%d",&i);
}
if(i==5)
{
srand((unsigned)time(NULL));
a=rand()%10+1;
b=rand()%10+1;
c=a+b;
printf("%d+%d=\n",a,b);
printf("请输入答案:\n");
scanf("%d",&d);
while(d!=c)
{
printf("回答错误，请重做:\n");
printf("%d+%d=\n",a,b);
scanf("%d",&d);
}
printf("回答正确!\n");
}
if(i==6)
{
srand((unsigned)time(NULL));
a=rand()%10+1;
b=rand()%100+1;
c=a+b;
printf("%d+%d=\n",a,b);
printf("请输入答案:\n");
scanf("%d",&d);
while(d!=c)
{
printf("回答错误，请重做:\n");
printf("%d+%d=\n",a,b);
scanf("%d",&d);
}
printf("回答正确!\n");
}
if(i==7)
{
srand((unsigned)time(NULL));
a=rand()%100+1;
b=rand()%100+1;
c=a+b;
printf("%d+%d=\n",a,b);
printf("请输入答案:\n");
scanf("%d",&d);
while(d!=c)
{
printf("回答错误，请重做:\n");
printf("%d+%d=\n",a,b);
scanf("%d",&d);
}
printf("回答正确!\n");
}
break;
}
case 2:
{
printf("***************************************************************\n");
printf("5.一位数减一位数\n");
printf("6.两位数减一位数\n");
printf("7.两位数减两位数\n");
printf("***************************************************************\n");
printf("请输入题型:");
scanf("%d",&i);
while(i<5||i>7)
{
printf("输入错误,请重新输入:\n");
scanf("%d",&i);
}
if(i==5)
{
srand((unsigned)time(NULL));
c=rand()%10+1;
d=rand()%10+1;
e=c-d;
printf("%d-%d=\n",c,d);
printf("请输入答案:\n");
scanf("%d",&g);
while(g!=e)
{
printf("回答错误，请重做:\n");
printf("%d-%d=\n",c,d);
scanf("%d",&g);
}
printf("回答正确!\n");
}
if(i==6)
{
srand((unsigned)time(NULL));
c=rand()%100+1;
d=rand()%10+1;
e=c-d;
printf("%d-%d=\n",c,d);
printf("请输入答案:\n");
scanf("%d",&g);
while(g!=e)
{
printf("回答错误，请重做:\n");
printf("%d-%d=\n",c,d);
scanf("%d",&g);
}
printf("回答正确!\n");
}
if(i==7)
{
srand((unsigned)time(NULL));
c=rand()%100+1;
d=rand()%100+1;
e=c-d;
printf("%d-%d=\n",c,d);
printf("请输入答案:\n");
scanf("%d",&g);
while(g!=e)
{
printf("回答错误，请重做:\n");
printf("%d-%d=\n",c,d);
scanf("%d",&g);
}
printf("回答正确!\n");
}
break;
}
case 3:
{
printf("***************************************************************\n");
printf("5.一位数乘一位数\n");
printf("6.一位数乘两位数\n");
printf("7.两位数乘两位数\n");
printf("***************************************************************\n");
printf("请输入题型:");
scanf("%d",&i);
while(i<5||i>7)
{
printf("输入错误,请重新输入:\n");
scanf("%d",&i);
}
if(i==5)
{
srand((unsigned)time(NULL));
e=rand()%10+1;
f=rand()%10+1;
g=e*f;
printf("%d*%d=\n",e,f);
printf("请输入答案:\n");
scanf("%d",&h);
while(h!=g)
{
printf("回答错误，请重做:\n");
printf("%d*%d=\n",e,f);
scanf("%d",&h);
}
printf("回答正确!\n");
}
if(i==6)
{
srand((unsigned)time(NULL));
e=rand()%10+1;
f=rand()%100+1;
g=e*f;
printf("%d*%d=\n",e,f);
printf("请输入答案:\n");
scanf("%d",&h);
while(h!=g)
{
printf("回答错误，请重做:\n");
printf("%d*%d=\n",e,f);
scanf("%d",&h);
}
printf("回答正确!\n");
}
if(i==7)
{
srand((unsigned)time(NULL));
e=rand()%100+1;
f=rand()%100+1;
g=e*f;
printf("%d*%d=\n",e,f);
printf("请输入答案:\n");
scanf("%d",&h);
while(h!=g)
{
printf("回答错误，请重做:\n");
printf("%d*%d=\n",e,f);
scanf("%d",&h);
}
printf("回答正确!\n");
}
break;
}
case 4:
{
printf("***************************************************************\n");
printf("5.一位数除于一位数\n");
printf("6.两位数除于一位数\n");
printf("7.两位数除于两位数\n");
printf("***************************************************************\n");
printf("请输入题型:");
scanf("%d",&i);
while(i<5||i>7)
{
printf("输入错误,请重新输入:\n");
scanf("%d",&i);
}
if(i==5)
{
srand((unsigned)time(NULL));
g=rand()%10+1;
h=rand()%10+1;
i=g/h;
printf("%d/%d=\n",g,h);
printf("请输入答案:\n");
scanf("%d",&j);
while(j!=i)
{
printf("回答错误，请重做:\n");
printf("%d/%d=\n",g,h);
scanf("%d",&j);
}
printf("回答正确!\n");
}
if(i==6)
{
srand((unsigned)time(NULL));
g=rand()%100+1;
h=rand()%10+1;
i=g/h;
printf("%d/%d=\n",g,h);
printf("请输入答案:\n");
scanf("%d",&j);
while(j!=i)
{
printf("回答错误，请重做:\n");
printf("%d/%d=\n",g,h);
scanf("%d",&j);
}
printf("回答正确!\n");
}
if(i==7)
{
srand((unsigned)time(NULL));
g=rand()%100+1;
h=rand()%100+1;
i=g/h;
printf("%d/%d=\n",g,h);
printf("请输入答案:\n");
scanf("%d",&j);
while(j!=i)
{
printf("回答错误，请重做:\n");
printf("%d/%d=\n",g,h);
scanf("%d",&j);
}
printf("回答正确!\n");
}
break;
}
case 0:
{
printf("谢谢使用！再见！\n");
break;
}
}
}
这次每次生成的题目都不同，也可以进行判断正误，但感觉代码过多重复冗杂0.0，不知如何缩进又不改变原本的功能0.0。
时间： 2024-10-17 11:29:35