How to return Value from Own Defined Function? by Bits Bytes

We learn about the Function case in C Plus Plus
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A C++ function definition consists of a function header and a function body. Here are all the parts of a function −

- Return Type

A function may return a value. The return_type is the data type of the value the function returns. Some functions perform the desired operations without returning a value. In this case, the return_type is the keyword void.

- Function Name

This is the actual name of the function. The function name and the parameter list together constitute the function signature.

- Parameters

A parameter is like a placeholder. When a function is invoked, you pass a value to the parameter. This value is referred to as actual parameter or argument. The parameter list refers to the type, order, and number of the parameters of a function. Parameters are optional; that is, a function may contain no parameters.

- Function Body

The function body contains a collection of statements that define what the function does.
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- Function Declarations

A function declaration tells the compiler about a function name and how to call the function. The actual body of the function can be defined separately.

-A function declaration has the following parts −
return_type function_name( parameter list );

For the above defined function max(), following is the function declaration −
int max(int, int);
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