有大手子帮忙看看这错的原因是什么吗?
#include <stdio.h>
#include <stdlib.h>
int main()
{int a,b,c;
a=rand()%100;
b=rand()%100;
printf("%d+%d=?",a,b);
sacnf("%d",&c);
if (c==a+b)
{
printf("this answer is right\n");
}
else
{
printf("this answer is wrong\n");
printf ("%d+%d=%d\n",a,b,a+b);
}
}
D:\collect2.exe [Error] ld returned 1 exit status