# include <stdio.h>
# include <stdlib.h>
# include <time.h>
int main()
{
int a,b,c,x,i,j=0,s;
do{
for(s=1;s<10;s++)
{
srand(time(0));
a=rand()%10+1;
b=rand()%10+1;
c=rand()%4+1;
switch (c)
{
case 1:
printf("%d+%d=",a,b);
x=a+b;
break;
case 2:
printf("%d-%d=",a,b);
x=a-b;
break;
case 3:
printf("%d*%d=",a,b);
x=a*b;
break;
case 4:
printf("%d/%d=",a,b);
x=a/b;
break;
}
scanf("%d",i);
if(i==x)
{
printf("Right!\n");
j++;
}else
{
printf("Wrong!");
}
}
printf("您的得分为%d",j*10);
printf("您的正确率为%d%%",j*10);
}while(j<8);
return 0;
}