using System;
using System.Collections.Generic;
using System.Text;
public interface IBinaryOperations
{
T Add(T arg1, T arg2);
T Subtract(T arg1, T arg2);
T Multiply(T arg1, T arg2);
T Divide(T arg1, T arg2);
}
public class BasicMath : IBinaryOperations
{
public BasicMath() {}
public int Add(int arg1, int arg2)
{ return arg1 + arg2; }
public int Subtract(int arg1, int arg2)
{ return arg1 - arg2; }
public int Multiply(int arg1, int arg2)
{ return arg1 * arg2; }
public int Divide(int arg1, int arg2)
{ return arg1 / arg2; }
}
class Program
{
static void Main(string[] args)
{
BasicMath m = new BasicMath();
Console.WriteLine("1 + 1 = {0}", m.Add(1, 1));
}
}