#include<stdio.h>

void main()
{
	int num1,num2,sum;
	sum = 0;
	printf("Enter num1 and num2:");
	scanf("%d%d",&num1,&num2);
	sum = num1 + num2;
	printf("sum is %d ",sum);
	if(sum == 0){
		num1++;
		num2--;	
	}
}
