What is double data type ?

The double is a data type and it is also a keyword. A double data type is similar as a float data type but double has the ability to store more digits compare than float.
A double data type is occupies 8 bytes (64 bits) and the range of double is 1.7E -308 to 1.7E +308. Format specifier of the double data type is ‘%lf’.

Syntax:

                double variable_name;

Ex:

     double a, b;

Here a and b are the variable name.