int resultNum(int numPositive, int numNegative);
int getNum(int res1);

int main ()
 {
	int sumPositive, sumNegative;


	printf("Enter a Positive number: ");
	sumPositive = getNum(sumPositive);

	printf("Enter a Negative number: ");
	sumNegative = getNum(sumNegative);

	resultNum(sumPositive, sumNegative);

	 printf("Press zero to exit game: ");

	 /* getNum(sumPositive, sumNegative); */

	 while(getNum(sumNegative) !=0)
	 ;

	return 0;
 }

 int resultNum(int numPositive, int numNegative)
 {

	 float average;
	 int sum;
	 sum = numPositive + numNegative;
	 average = (float)sum/3;

	 printf("The average of data is: %5.2f\n", average);

	return average;

 }

int getNum()
	{

		int res1;


		scanf("%d", res1);
		if (res1 == 0)
		{
		printf("you  pressed zero.");
		exit(0);
		}


		return res1;
	}