long keyword in C#
Keywords are the words in a language that are used for some internal process or represent some predefined actions. long is a keyword that is used to declare a variable which can store a signed integer value from the range of -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807. It is an alias of System.Int64.
Syntax:
long variable_name = value;
long keyword occupies 8 bytes (64 bits) space in the memory.
Example:
Input: num: 34638 Output: num: 34638 Size of a long variable: 8 Input: num = -79349367648374345 Output: Type of num: System.Int64 num: -79349367648374345 Size of a long variable: 8
If we input number beyond the range, it shows error-
Integral constant is too large
Example 1:
// C# program for long keyword using System; using System.Text; class GFG { static void Main( string [] args) { // variable declaration long num = 34638; // to print value Console.WriteLine( "num: " + num); // to print size Console.WriteLine( "Size of a long variable: " + sizeof ( long )); } } |
Output:
num: 34638 Size of a long variable: 8
Example 2:
// C# program for long keyword using System; using System.Text; namespace Test { class GFG { static void Main( string [] args) { // variable declaration long num = -79349367648374345; // 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 long variable: " + sizeof ( long )); // to print minimum & maximum value of long Console.WriteLine( "Min value of long: " + long .MinValue); Console.WriteLine( "Max value of long: " + long .MaxValue); // hit ENTER to exit Console.ReadLine(); } } } |
Output:
Type of num: System.Int64 num: -79349367648374345 Size of a long variable: 8 Min value of long: -9223372036854775808 Max value of long: 9223372036854775807
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