Arithmetic Operation Using Switch Case Statement In C#

using System;
class Program
{
static void Main()
{
//Reading First Number
Console.Write("Enter No1: ");
int a = Convert.ToInt16(Console.ReadLine());
//Reading Second Number
Console.Write("Enter No2: ");
int b = Convert.ToInt16(Console.ReadLine());
Console.WriteLine("1.Addition");
Console.WriteLine("2.Subtraction");
Console.WriteLine("3.Divsion");
Console.WriteLine("4.Multiplication");
Console.WriteLine("5.Increment");
Console.WriteLine("6.Decrement");
//Reading a Choice
int c = Convert.ToInt16(Console.ReadLine());
switch(c)
{
case 1:
   Console.WriteLine("Addition Of Two Numbers : "+(a+b));
   break;
case 2:
   Console.WriteLine("Subtraction Of Two Numbers : " + (a - b));
   break;
case 3:
    Console.WriteLine("Division Of Two Numbers : " + (a / b));
    break;
case 4:
   Console.WriteLine("Multiplicaion Of Two Numbers : " + (a * b));
   break;
case 5:
   Console.WriteLine("Increment Numbers : " + (++a) + " " + (++b));
   break;
case 6:
   Console.WriteLine("Decrement Numbers : " + (--a)+" "+(--b));
   break;
default:
   Console.WriteLine("Choose Only 1 To 6 ");
break;
}
Console.ReadLine();
}
}