using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace Operators
{
public class Calculation
{
public int result;
public int add(int a, int b)
{
result = a + b;
return result;
}
public int sub(int a, int b)
{
result = a - b;
return result;
}
public int mul(int a, int b)
{
result = a * b;
return result;
}
public double div(int a, int b)
{
result = a / b;
return result;
}
static void Main(string[] args)
{
Console.Write("Enter Number 1 : ");
int
num1 = Convert.ToInt32(Console.ReadLine());
Console.Write("\nEnter Number 2 : ");
int
num2 = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Enter 1 for Addition
");
Console.WriteLine("Enter 2 for
Subtraction ");
Console.WriteLine("Enter 3 for Multiplication ");
Console.WriteLine("Enter 4 for Division
");
Console.WriteLine("Enter 5 for Exit
");
Console.WriteLine("Enter your choice
");
int
op = Convert.ToInt32(Console.ReadLine());
Console.Clear();
int
ans = 0;
Calculation obj = new Calculation();
Console.Clear();
switch(op)
{
case 1:
{
ans = Convert.ToInt32(obj.add(num1,
num2));
Console.WriteLine(num1+ "+" +num2 + "=" +ans);
break;
}
case 2:
{
ans = Convert.ToInt32(obj.sub(num1,
num2));
Console.WriteLine(num1 + "-" + num2 + "=" + ans);
break;
}
case
3:
{
ans = Convert.ToInt32(obj.mul(num1,
num2));
Console.WriteLine(num1 + "*" + num2 + "=" + ans);
break;
}
case 4:
{
ans = Convert.ToInt32(obj.div(num1,
num2));
Console.WriteLine(num1 + "/" + num2 + "=" + ans);
break;
}
case 5:
{
System.Environment.Exit(1);
break;
}
} Console.ReadKey();
}
}
}
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