Integer Constant.

Q9. What is an integer constant? Write integer forming rule of C++.

Ans. Integer constants are whole numbers without any fractional part.

The method of writing integer constants has been specified in the following rule:

An integer constant must have at least one digit and must not contain any decimal point. It may contain either + or – sign. A number with no sign is assumed to be positive. Commas cannot appear in an integer constant.

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