C# Tutorial 3 - C# Variable | Variable Initialization | C# Data Type

Variable - 

A variable is a name that denotes a storage area used to store a data value that can be changed by our program.

 

Variable declaration rules -

1- They must not start with a digit.

2- Uppercase and lowercase are treated as unique.

3- We can not declare the keyword as a variable.

4- We can not use white space.

5- Variable names can be of any length.

Initialization of variables -

string stringVar = "Hello World!!";

int intVar = 100;

float floatVar = 10.2f;

char charVar = 'A';

bool boolVar = true;  

Data type -

It specifies the size and type of values that can be stored in variable. There are 2 types of data type.