Variables
Variables
In C#, a variable is a named storage location that holds a value of a certain type. Here’s an example of how to declare and initialize a variable in C#:
int age = 30;
In this example, we’re declaring a variable named age of type int (which stands for integer) and initializing it with the value 30.
C# supports several data types for variables, including:
- Numeric types, such as int, float, double, and decimal
- Boolean type, which can hold a value of either true or false
- Character type, which represents a single character and is denoted with the char keyword
- String type, which represents a sequence of characters and is denoted with the string keyword
- Object type, which is a reference type that can hold any type of value
You can also declare multiple variables of the same type on a single line, like this:
int a = 10, b = 20, c = 30;
This declares three variables of type int named a, b, and c, and initializes them with the values 10, 20, and 30, respectively.
You can also declare variables without initializing them, like this:
int x;
In this case, the variable x is declared but not initialized, so its value is undefined until you assign a value to it.
Variables can be used throughout your C# code to store and manipulate data. You can assign new values to variables, perform arithmetic operations on numeric variables, and concatenate strings using the + operator.
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