Skip to main content

Variables

Introduction to Variables in C#

Variable is a fundamental concept in any programming language and C# is no exception. They act as containers to store data that can be manipulated and used throughout your program. In this tutorial, we'll learn about the types of variables in C#, how to declare them, and how to use them.

What are Variables?​

In C#, a variable allows you to store a value by assigning it to a name, which can be used to refer to the value later in the program. This value can be changed or manipulated as needed.

Types of Variables in C#​

C# is a statically typed language, which means that the type of a variable is checked at compile time. Here are some of the most common types of variables in C#:

  • Integers (int): Used to store whole numbers.
  • Floating Point (float, double): Used to store decimal numbers.
  • Characters (char): Used to store a single character.
  • Strings (string): Used to store a series of characters or text.
  • Booleans (bool): Used to store true or false values.

Declaring Variables​

To declare a variable in C#, you need to specify its type followed by its name. You can also assign a value to the variable when it is declared. Here's how you do it:

int myNumber;
myNumber = 10;

float myFloat = 7.5f;

char myChar = 'A';

string myString = "Hello World";

bool myBool = true;

In the above example, myNumber is a variable of type int, myFloat is a variable of type float, myChar is a variable of type char, myString is a variable of type string, and myBool is a variable of type bool.

Using Variables​

Once a variable is declared, you can use it by referring to it by name:

int x = 10;
int y = 20;
int sum = x + y;

Console.WriteLine(sum);

In the above example, the sum of x and y is stored in the sum variable, which is then printed to the console.

Conclusion​

Understanding variables and their usage is crucial in learning C# as they are used everywhere in the language. As you progress, you'll encounter more complex types and uses of variables. But for now, understanding these basics will take you a long way. Happy coding!