运行结果不对。只能得到sum is %d.得不到算数结果

Question

#include<stdio.h>
int main ()
{
int a,b,sum;
a=9;
b=99;
sum=a+b;
printf("sum is ％d\n",sum);
return 0;
}

Answer 1

请你用英文的百分号%哈哈