#include<stdio.h>
#include<Windows.h>
#include<time.h>
void main()
{
int a, b, c, d,i,n;
srand(unsigned( time(NULL)));
for (i =
0; i <
30; i++
)
{
a=rand()%
100;
b=rand()%
100;
c=rand()%
4;
switch (c)
{
case 0: printf(
"%d+%d=\n",a,b);
break;
case 1:
if (a<
b)
{
d=
a;
a=
b;
b=
d;
}
printf("%d-%d=\n",a,b);
break;
case 2:
printf("%d*%d=\n",a,b);
break;
case 3:
while (b==
0)
{
b=rand()%
100;
}
printf("%d/%d=\n",a,b);
}
}
system("pause");
}
转载于:https://www.cnblogs.com/lzm-000/p/9787155.html
