C# program to define various types of constants

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 JustTechReview { 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