小白入门.输入一个整数，判断他的奇偶性，若偶则再判断一步.（输出错误取值错误）

#include<stdio.h>
int main()
{
    int a,b,c;
    scanf("%d",&a);
    b=a%2;
    if(b==0)
    {
        printf("%d is even even\n",a);
        c=a/2%2;
        if(c==0)
        {
            printf("Half of %d is also even\n",a);
        }
        else
        {
            printf("Half of %d is not even\n",a);
        }
        
    }
    else
        {
            printf("%d is not even\n",a);
        }
    return 0;
}