Constants

Constants

A constant is an entity that doesn't change during the execution of a program.
Followings are the different types of constants :

1. Real Constant :

• It must have at least one digit.
• It must have a decimal point which may be positive or negative.
• Use of blank space and comma is not allowed between real constants.
• Example:

+194.143, -416.41

2. Integer Constant :

• It must have at least one digit.
• It should not contain a decimal place.
• It can be positive or negative.
• Use of blank space and comma is not allowed between real constants.
• Example:

1990, 194, -394

3. Character Constant :

• It is a single alphabet or a digit or a special symbol enclosed in a single quote.
• Maximum length of a character constant is 1.
• Example:

'T', '9', '$'

4. String Constant :

• It is collection of characters enclosed in double quotes.
• It may contain letters, digits, special characters and blank space.
• Example:

"Technowell Web Solutions, Sangli"