Define function/ Discuss its important types
Answers
An action performed by a device, department, or person that produces a result. Function remains more or less fixed whereas the purpose (which indicates intention or objective) generally changes. For example, the function of a hammer is to strike something nearby whereas its purpose (what to strike and why) could be anything the hammer-wielder has in mind.
Mathematics: A mathematical relationship in which a quantity (dependent variable) depends on or is determined by another quantity (independent variable) or quantities. The dependent variable is said to be a function of the independent variable(s).
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Function Types. A function has the derived type "function returning type". The type can be any data type except array types or function types, although pointers to arrays and functions can be returned. If the function returns no value, its type is "function returning void ", sometimes called a void function.
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