Variables in c language

 Variables -

A variable is defined as the name given to a memory location. Where  the data 

Can be store accessed or manipulated in which is used to store a value is called variable.

 

There's two types -

1. Internal/local variable 

2. External/Global variable 

1. Local variable -

Local variables are declared inside a 

Particular functions. They are local to particular functions. They are declared inside a function. In which they are to be initialized . They are private property 

Of a particular function and can not be 

Exit outside.

Example-

  #included <stdio. h>

    Void main()

{

  Int a=10;

Printf("value of a");

getch();

}

Global variable -

Global variable declared outside the function. They can use in whole program.

Example -

#included <stdio. h>

    Void main()

Int a=20;

{

a =10; 

Printf("value of a");

getch();

}