5.functions
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Functions allow code to be reused by defining blocks of code that perform tasks and can be called from different parts of a program. A function consists of a return type, name, list of arguments, and block of code, and is defined with a prototype and definition. Arguments are passed to functions through actual arguments during a function call, corresponding to the formal arguments specified in the function prototype and definition.
5.functions
- 1. Functions What you’ll learn: o Introduction to functions o Passing values to functions
- 2. What is a function? A function is a self-contained block of statement(s)/code that performs a unified task of some kind. It is a re-usable code that can be used anywhere and anytime in the whole program.
- 3. Syntax of a function return_type func_name (list_of_arguments); return_type func_name (list_of_arguments) { …block of code… } func_name(values_of_arguments); Prototype Declaration: Definition: Calling:
- 4. Passing Arguments to Functions int add (int a, int b) { return a+b; } sum = add (i, j); Formal Arguments Actual Arguments • While declaring and defining, formal arguments are used. • While calling, actual arguments are used.
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