Variable declaration
All the variables must be declared before their use. It does two things:
(a) Tell the compiler what the variable name is.
(b) Specify what type of data that a variable will hold.
Syntax of variable declaration:
data_type variable_name;
Example of variable declaration:
int i,j,k;
char ch;
Assigning values to variables
To assign values to the variables, assignment operator (=) is used.
Syntax of assigning values:
variable declaration;
Variable_name = value;
Example of assigning values:
Int i , j;
j = 5 ;
i = 0 ;
It is also possible to assign a value at the time of declaration.
e.g.
int i = 5;
More than one variable can be initialized in one statement using multiple assignment operators.
e.g. j = m = 2;
There could be an exception while using multiple assignment operators.
e.g. int i , j = 2 , k;
here the assignment will be i = 0 j=2 and k = garbage value
