Predefined functions are functions that are built into C++ Language to perform some standard
operations. The functions that are stand alone used for general purposes and that are not depended on any classes are
stored in the Standard Function Library. Predefined functions in the Standard Function Library are listed based on different categories.
List of basic types of standard library functions:
C++ is one of the most used programming languages in the world. Also known as "C with Classes".
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