//  推断一个数是奇偶数

#include <stdio.h>

void judge_sd(int a)

{

	if ((a & 1) == 0)

	{

		printf("是偶数\n");

		return;

	}

	else

	{

		printf("是奇数\n");

		return;

	}

}

int main()

{

	judge_sd(0);

	judge_sd(1);

	judge_sd(4);

	return 0;

}