Question

What do you mean by variable ? Explain the scope of variables.

Answer 1

Answer:

A variable is a named memory location which holds a particular value .

The scope of variables is defined as the place in the program where the variable is valid .

Explanation:

Suppose take the example of :

int x = 5 ;

Here x is a variable which holds the value of 5 .

int is the datatype of x .

Another example is int a = 1 ;

Here a is the variable .

(=) is the assignment operator .

The value of a is assigned 1 .

Scope of a variable can be identified by the separators .

The variable is only valid within the curly braces in which it is declared .

A class variable is valid within the class .