C# Nested if Statements

C# Decision

In C#, nested if-else statements are valid, which means you can use another if or else if statement within an if or else if statement.

Syntax

The syntax for nested if statements in C#:

if(boolean_expression 1)
{
   /* Executed when boolean expression 1 is true */
   if(boolean_expression 2)
   {
      /* Executed when boolean expression 2 is true */
   }
}

You can nest else if...else in a similar way to nesting if statements.

Example

using System;

namespace DecisionMaking
{
    class Program
    {
        static void Main(string[] args)
        {
            // Local variable definition
            int a = 100;
            int b = 200;

            // Check the boolean condition
            if (a == 100)
            {
                // Check the condition when the first condition is true
                if (b == 200)
                {
                    // Print the statement when the condition is true
                    Console.WriteLine("The value of a is 100 and the value of b is 200");
                }
            }
            Console.WriteLine("Exact value of a is {0}", a);
            Console.WriteLine("Exact value of b is {0}", b);
            Console.ReadLine();
        }
    }
}

When the above code is compiled and executed, it produces the following result:

The value of a is 100 and the value of b is 200
Exact value of a is 100
Exact value of b is 200

C# Decision