double Keyword in C#
Last Updated :
22 Jun, 2020
Keywords are the words in a language that are used for some internal process or represent some predefined actions. It is a keyword that is used to declare a variable that can store a floating-point value from the range of ±5.0 x 10-324 to ±1.7 x 10308. It is an alias of System.Double. Basically, it is a 64-bit double precision floating point number and have 14 to 15 digit precision.
Double Keyword occupies 8 byte (64 bits) space in the memory.
Syntax:
double variable_name = value;
We can specify a suffix d or D to represent a double value. Also floating point value without using any suffix is considered as a double value.
Example:
Input: num: 1234.5678
Output: num: 1234.5678
Size of a double variable: 8
Input: num = -67895.4322D
Output: Type of num: System.Double
num: -67895.4322
Size of a double variable: 8
Example 1:
using System;
using System.Text;
class geeks {
static void Main( string [] args)
{
double num = 1234.5678;
Console.WriteLine( "num: " + num);
Console.WriteLine( "Size of a double variable: " + sizeof ( double ));
}
}
|
Output:
num: 1234.5678
Size of a double variable: 8
Example 2:
using System;
using System.Text;
namespace Test {
class geeks {
static void Main( string [] args)
{
double num = -67895.4322D;
Console.WriteLine( "Type of num: " + num.GetType());
Console.WriteLine( "num: " + num);
Console.WriteLine( "Size of a double variable: " + sizeof ( double ));
Console.WriteLine( "Min value of double: " + double .MinValue);
Console.WriteLine( "Max value of double: " + double .MaxValue);
Console.ReadLine();
}
}
}
|
Output:
Type of num: System.Double
num: -67895.4322
Size of a double variable: 8
Min value of double: -1.79769313486232E+308
Max value of double: 1.79769313486232E+308
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