//This program prompt the user to enter 4 sets of two integer numbers. 
//if the input data are 1,2,2,3,3,4,4,5
//the output are 3 2x3=6 
//				 5 3x4=12
//				 7 4x5=20
//				 9 5x6=30

#include <iostream>
#include <iomanip>
#define newline '\n'
using namespace std;
int Addition(int &, int &);
float multiplication(int, int );

int main()
{
	int i;
	int num1, num2, result2;
	int result1;
	cout<<"enter 4 sets of two integer numbers: \n";
	for(int i=1; i<=4; i++)
	{
		cout<<"enter set "<<i<<endl;
		cin>>num1>>num2;
		result2= Addition(num1, num2);
		cout<<result2<<" ";
		cout<<num1<<"x"<<num2<<"="<<multiplication(num1, num2)<<endl;
	}	
}
int Addition(int &n1, int &n2)
{
	int result;
	result= n1 + n2;
	n1++; 
	n2++;
	return result;
}
float multiplication(int n1, int n2)
{
	return n1*n2;
}