p242 삼항연산자 int - positive/negative/absolute value

#include <stdio.h>

int main(void)
{
	int num;
	int abs;

	printf("enter int : ");
	scanf("%d", &num);

	if (num == 0)
		printf("zero.\n");
	else
		(num > 0) ? printf("positive num.\n") : printf("negative num.\n");

	abs = (num > 0) ? num : num * (-1);
	printf("absolute value : %d \n", abs);

	return 0;
}