C# Keywords Tutorial Part 24: double

C# Keywords Tutorial Part 24: double

C# is a powerful programming language that provides a wide range of data types to work with. One of the most commonly used data types in C# is the “double” keyword. In this blog post, we will explore the “double” keyword in C# and provide some code examples to help you better understand how to work with it.

What is a “double” in C#?

A “double” in C# is a floating-point data type that is used to represent decimal numbers with a high degree of precision. It is called a “double” because it provides twice the precision of a “float”. A “double” occupies 8 bytes of memory and can store values ranging from approximately 5.0 x 10^-324 to 1.7 x 10^308.

Declaring a “double” variable in C#

To declare a “double” variable in C#, you simply need to use the “double” keyword followed by the variable name. Here is an example:

double myDouble = 3.14159;

In this example, we declare a “double” variable named “myDouble” and initialize it with the value of pi (3.14159).

Performing arithmetic operations with “double” variables

You can perform various arithmetic operations with “double” variables in C#. Here are a few examples:

double num1 = 10.0;
double num2 = 3.0;

double sum = num1 + num2; // 13.0
double difference = num1 - num2; // 7.0
double product = num1 * num2; // 30.0
double quotient = num1 / num2; // 3.3333333333333335

Formatting “double” values in C#

When formatting “double” values in C#, you can use various formatting options to control the precision and display format. Here is an example:

double myDouble = 3.14159;

// Format the double to display two decimal places
string formattedDouble = myDouble.ToString("F2"); // "3.14"

In this example, we format the “double” value to display two decimal places using the “F2” format specifier.

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