ulong keyword in C#
Keywords are the words in a language that are used for some internal process or represent some predefined actions. ulong is a keyword that is used to declare a variable which can store an unsigned integer value from the range 0 to 18,446,744,073,709,551,615. It is an alias of System.UInt64.
ulong keyword occupies 8 bytes (64 bits) space in the memory.
Syntax:
ulong variable_name = value;
Example:
Input: num: 223 Output: num: 223 Size of a ulong variable: 8 Input: num = 0 Output: Type of num: System.UInt64 num: 0 Size of a ulong variable: 8
Note:
- If we input number beyond the range, it shows error-
Integral constant is too large
- If we input wrong value for eg. -34, it shows error-
Constant value `-34' cannot be converted to a `ulong'
Example 1:
// C# program for ulong keyword using System; using System.Text; class Prog { static void Main( string [] args) { // variable declaration ulong num = 223; // to print value Console.WriteLine( "num: " + num); // to print size Console.WriteLine( "Size of a ulong variable: " + sizeof ( ulong )); } } |
Output:
num: 223 Size of a ulong variable: 8
Example 2:
// C# program for ulong keyword using System; using System.Text; namespace Test { class Prog { static void Main( string [] args) { // variable declaration ulong num = 0; // to print type of variable Console.WriteLine( "Type of num: " + num.GetType()); // to print value Console.WriteLine( "num: " + num); // to print size Console.WriteLine( "Size of a ulong variable: " + sizeof ( ulong )); // to print minimum & maximum value of ulong Console.WriteLine( "Min value of ulong: " + ulong .MinValue); Console.WriteLine( "Max value of ulong: " + ulong .MaxValue); // hit ENTER to exit Console.ReadLine(); } } } |
Output:
Type of num: System.UInt64 num: 0 Size of a ulong variable: 8 Min value of ulong: 0 Max value of ulong: 18446744073709551615
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