Conditional Statement in C#

C# has two constructs for braching code – the if statement, which allows us to test whether a specific condition is met, and the switch statement, which allows us to compare an experssion with a number of different values.

The if statement is one of the single most important  statements in every programming language. In C#, the if statement is very simple to use. The if statement needs a boolean result that is true or false.

The switch statement is like a set of if statements. It will be familiar to C++ and Java programmers and is similar to select case statement in Visual Basic.

• The if statement

          if (condition)

          statement(s)

          else

          statement(s)

          Example:

namespace IfStatement

{

    class Program

    {

        static void Main(string[] args)

        {

            int mValue;

            Console.WriteLine("Enter a Value between 0 and 5");

            mValue = int.Parse(Console.ReadLine());

            if (mValue <= 5)

                Console.WriteLine("Value is between 0 and 5!");

            else

                Console.WriteLine("Value greater than 5!!");

            Console.ReadLine();            

           

        }

    }

}

• The switch statement

           Example:

namespace SwitchStatements

{

    class Program

    {

        static void Main(string[] args)

        {

            int mValue;

            Console.Write("Value is: ");

            mValue = int.Parse(Console.ReadLine());

            switch (mValue)

            {

                case 1:

                    Console.WriteLine("Value = 1");

                    break;

                case 2:

                    Console.WriteLine("Value = 2");

                    break;

                case 3:

                    Console.WriteLine("Value = 3");

                    break;

                case 4:

                    Console.WriteLine("Value = 4");

                    break;

                default:

                    Console.WriteLine("Value is not 1,2,3 or 4");

                    break;

            }

            Console.ReadLine();

        }

    }

}