#include <stdio.h>

/* function prototype or definition */
int Add(int x, int y);
int Multiply(int x, int y);
int Divide(int x, int y);
int Subtract(int x, int y);


int main( )
{
	int i,j;
	printf("Input i:");
	scanf("%d",&i);
	printf("Input j:");
	scanf("%d",&j);
	printf("%d + %d = %d\n", i, j, Add(i,j));
	printf("%d\n",Multiply(i,j));
	printf("%d\n",Divide(i,j));
	printf("%d\n",Subtract(i,j));
	getchar();
}

/* function definition */
int Add(int x, int y)
{
	return x+y;
}
int Multiply(int x, int y)
{
	return x*y;
}
int Divide(int x, int y)
{
	return x/y;
}
int Subtract(int x, int y)
{
	return x-y;
}