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C# program to define various types of constants

C# constant example: Here, we are writing a C# program – to define various type of constant and printing their values. By IncludeHelp Last updated : April 15, 2023

C# Constants Example

Like other programming languages, In C#, we can also defining various types of constants and printing their values.

Defining Constants

A constant can be defined using const keyword, once constant is defined, it’s value can never be changed.

Syntax

    const data_type constant_name = value;
    const float PI = 3.14f;

Example

    Input:
    const int a = 10;   //integer constant 
    
    Console.WriteLine("a: {0}", a);

    Output:
    a: 10

C# code to define various types of constants

// C# program to define various types of constants 

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

namespace IncludeHelp {
  class Test {
    // Main Method 
    static void Main(string[] args) {
      const int a = 10; //integer constant 
      const float b = 20.23f; //float constant
      const double c = 10.23; //double constant
      const char d = 'Y'; //character constant 
      const string e = "Hello"; //string constant

      //printing values
      Console.WriteLine("a: {0}", a);
      Console.WriteLine("b: {0}", b);
      Console.WriteLine("c: {0}", c);
      Console.WriteLine("d: {0}", d);
      Console.WriteLine("e: {0}", e);

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

Output

a: 10
b: 20.23
c: 10.23
d: Y
e: Hello

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