
The C Declarations 29
A. Numerical Constants
1) Integer constants: These are the sequence of numbers from 0 to 9 without decimal points or
fractional part or other symbols. It requires minimum two bytes and maximum four bytes. Integer
constants could either be positive, negative or maybe zero. The number without a sign is assumed as
positive.
Example 10,20, +30, -15 etc.
2) Real constants: Real constants are often known as floating point constants. Integer constants are
unfit to represent many quantities. Many parameters or quantities are defined not only in integers but
also in real numbers. For example, length, height, prize, distance e