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C# - Example of Simple if else Statement

C# simple if else statement example: Here, we are writing a C# - Example of Simple if else Statement.
Submitted by IncludeHelp, on April 07, 2019 [Last updated : March 17, 2023]

if else Statement

Like other programming languages, simple if else statement in C# is used to execute one code block written in two different blocks based on the condition.

Syntax

if(test_condition){
    //code section 1
}
else{
    //code section 2
}

If test_codition is true, statements written in "code section 1" will be executed, if test_condition is false, statements written in "code section 2" will be executed.

C# program to demonstrate example of simple if else statement

In this program, there are two different codes – 1) Input age and check whether age is teenage or not, and 2) Input two numbers and check whether first number is divisible by second number or not

// C# program to demonstrate example of 
// simple if else statement

using System;
using System.IO;
using System.Text;

namespace IncludeHelp {
  class Test {
    // Main Method 
    static void Main(string[] args) {
      //example 1: Input age and check it's teenage or not
      int age = 0;
      Console.Write("Enter age: ");
      age = Convert.ToInt32(Console.ReadLine());

      //checking condition
      if (age >= 13 && age <= 19)
        Console.WriteLine("{0} is teenage", age);
      else
        Console.WriteLine("{0} is teenage", age);

      //example 2: Input two integer numbers and check 
      //whether first number is divisible by second or not?
      int a, b;
      Console.Write("Enter first number : ");
      a = Convert.ToInt32(Console.ReadLine());
      Console.Write("Enter second number: ");
      b = Convert.ToInt32(Console.ReadLine());

      //checking condition
      if (a % b == 0)
        Console.WriteLine("{0} is divisible by {1}", a, b);
      else
        Console.WriteLine("{0} is not divisible by {1}", a, b);

      //hit ENTER to exit the program
      Console.ReadLine();
    }
  }
}

Output

Enter age: 17
17 is teenage
Enter first number : 120
Enter second number: 20
120 is divisible by 20

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