怎么用C语言编这个程序

这个程序很简单啊
经调试正确运行

#include<stdio.h>
void main()
{
int a;
printf("Please input interger number:\n");
scanf("%d",&a);
if(a>0&&a%2==0)printf("This number is positive and even.\n");
else if(a>0&&a%2!=0)printf("This number is positive and odd.\n");
else if(a<0&&a%2==0)printf("This number is negative and even.\n");
else if(a<0&&a%2!=0)printf("This number is negative and odd.\n");
else printf("This number is zero.\n");
}

注：positive正数；negative负数；odd奇数；even偶数

一起判断是用一个语句就能判断这两个吗？那个可够厉害的啊，反正我是没想到。。。

main()
{
int i;

printf("Please input the number:");
scanf("%d",&i);
if(i>0)
printf("i>0\n" );
if(i<0)
printf("i<0\n" );
if(i%2==0)
printf("i%2==0\n" );