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double keyword in C#
C# double keyword: Here, we are going to learn about the double keyword in C#, what is double keyword, how to use it in C#?
Submitted by IncludeHelp, on March 07, 2019
C# double keyword
In C#, float is a keyword which is used to declare a variable that can store a floating point value between the range of ±1.5 x 10−45 to ±3.4 x 1038. float keyword is an alias of System.Single.
It occupies 8 byte (64 bits) space in the memory.
Note: Any floating point value without using any suffix is considered as a double value. We can also specify a suffix d or D to represent a double value.
Syntax:
double variable_name = value;
C# code to demonstrate example of double keyword
Here, we are declaring a double variable num, initializing it with the value 12345.6789 and printing its value, type, and size of a double type variable.
using System;
using System.Text;
namespace Test
{
class Program
{
static void Main(string[] args)
{
//variable declaration
double num = 12345.6789;
//printing value
Console.WriteLine("num: " + num);
//printing type of variable
Console.WriteLine("Type of num: " + num.GetType());
//printing size
Console.WriteLine("Size of a double variable: " + sizeof(double));
//printing minimum & maximum value of double
Console.WriteLine("Min value of double: " + double.MinValue);
Console.WriteLine("Max value of double: " + double.MaxValue);
//hit ENTER to exit
Console.ReadLine();
}
}
}
Output
num: 12345.6789
Type of num: System.Double
Size of a double variable: 8
Min value of double: -1.79769313486232E+308
Max value of double: 1.79769313486232E+308