Discuss different data types used in C with example.

1) int

2) float

3) double

4) char

int: These are whole numbers, both positive and negative. Unsigned integers (positive values only) are supported. In addition, there are short and long integers. Its data range is -32768 to +32767

The keyword used to define integers is: int.

An example of an integer value is 32. An example of declaring an integer variable called sum is:

            int sum;

            sum = 20;

float: These are numbers which contain fractional parts, both positive and negative. The keyword used to define float variables is: float. Its data range is -3.4e38 to +3.4e38.

An example of a float value is 34.12. An example of declaring a float variable called money is:

            float money;

            money = 0.12;

double:double is used to define BIG floating point numbers. It reserves twice the storage for the number. Its data range is -1.7e38 to +1.7e38. An example:

        double Atoms;

        Atoms = 2500000;

   

Char: These are single characters. The keyword used to define character variables is: char

An example of a character value is the letter A. An example of declaring a character variable called letter is:

char letter;

            letter = 'A';