using System;

public class Program {

  public static void Main() {

    int a = 10;

    int b = 5;

    // Addition (+)

    Console.WriteLine("a + b = " + (a + b));

​

    // Subtraction (-)

    Console.WriteLine("a - b = " + (a - b));

​

    // Multiplication *

    Console.WriteLine("a * b = " + (a * b));

​

    // Division

    Console.WriteLine("a / b = " + (a / b));

​

    // Modulus(%)

    Console.WriteLine("a % b = " + (a % b));

​

    // Increment (++)

    a++;

    Console.WriteLine("a++ = " + (a++));

​

    // Decrement (--)

    b--;

    Console.WriteLine("b-- = " + (b--));

  }

}