奇偶ASCII值判断，得了9分，显示wrong answer

Question

#include
using namespace std;

int main()
{
char a;
cin>>a;
if(a%2==1)
cout<<"YES";
else cout<<"NO";

return 0;

}

Answer 1

a是一个字符，你拿字符取余2，你想让计算机怎么跑