How do I use if-else statement?

Category: Introduction, viewed: 144 time(s).

The example below shows you how to use the if-else statement for checking a condition. The if block will be executed when the boolean expression passed resulted in a true value otherwise the else block will be executed.

using System;

namespace Kodecsharp.Example.Intro
{
    class IfElseDemo
    {
        public static void Main(string[] args)
        {
            int a = 10;
            int b = 25;

            //
            // A simple if-else block
            //
            if (a <= b)
            {
                Console.WriteLine("a is less than or equals to b");
            }
            else
            {
                Console.WriteLine("b is greater than a");
            }

            //
            // An if-else if-else block
            //
            if (a * 4 < b)
            {
                Console.WriteLine("a * 4 is less than b");
            }
            else if (a * 5 - 8 < b)
            {
                Console.WriteLine("a * 5 - 8 is less that b");
            }
            else
            {
                Console.WriteLine("a = " + a + "; b = " + b);
            }

            Console.ReadLine();
        }
    }
}

Our program result:

a is less than or equals to b
a = 10; b = 25
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