C语言学习笔记<四>
随机产生一个加法
#include "math.h"
main()
{ int a,b,sum,k,i=1,m=0,n=0;
for(i=1;i<=10;i++)
{
a= rand()%10+1;
b= rand()%10+1;
sum=a+b;
printf("%d+%d=",a,b);
scanf("%d",&k);
printf("\n");
if(k==sum) {printf("right\n");m++;}
else printf("not correct\n");n++;
}
printf(" right is %d\nerror is %d,",m,n);
getch();
}