How to Define Data Types?

The Syntax for Defining a Data type is:

<Data Type> <Variable Name> , . . . . . . ;

Declaration is done at the beginning of function :

Data Definition	Data type	Memory Defined	Size (bytes)	Value Assigned
char a, c;	char	a c	1 1	- -
char a=’Z’	char	a	1	Z
int a;	int	a	4	-
int a = 2;	int	a	4	2
float a;	float	a	4	-
float a = 2.3;	float	a	4	2.3

 So, this is how you declare & define data types in your C program.