From David Bolton,
Your Guide to C / C++ / C#.
FREE Newsletter. Sign Up Now!

Definition: A function is a block of code that performs a calculation and returns a value.

y = sin( alpha ) ;

This call a function to calculate the sin of the angle stored in the variable alpha.

All procedural computer languages including C,C++ and C# provide libraries of functions to manipulate strings, maths,time/date and file handling, and programmers can also write their own functions.

Glossary:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Also Known As: procedure, subroutine

Examples: The function calculated the price of an interest rate swap