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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