Declaring a Variable in C

The basic syntax for declaring a variable in C is 

                                datatype variablename
Datatype stands for the type of data of the variable it can be an integer,floating point value ,character etc.


The basic thing to understand is datatype specifies the the type of your variable whether it is a number,name or any other type of data.
                                                                                     

The primary data types in C are                                                     

1.	Integer	int
2.	Character	char
3.	Floating Point	float
4.	Double precision floating point	double
5.	Void	void

The range of values which these data types can take are given below in the table

Datatype	Range
char	-128 to 127
Int	-32768 to +32767
float	3.4 e-38 to 3.4 e+38
double	1.7 e-308 to 1.7 e+308