How to use inline functions and macros

This article will explain in detail how to use inline functions and macro definitions. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

What are the advantages of inline functions?

Inline functions can run faster than ordinary functions because there is no need to interrupt the call.

Inline refers to the embedded code, that is, instead of jumping to the place where the function is called, the code is written directly there, reducing the consumption of ordinary function calls.

When to use the inline function?

A function is called repeatedly.

The function has only a few simple lines, and the function does not contain for, while, switch statements.

Inline is not suitable for the following situations:

The code for the body of the function is longer.

A loop occurs in the body of the function.

Constructor and destructor of the class.

What do inline functions and macros have in common?

Space for time

What is the difference between an inline function and a macro definition?

Macros are a simple alternative to code without any validation, while inline functions insert code directly into the call.

Inline functions do parameter type checking, and inline is safer than macros at no extra cost, which is the advantage of inline functions over macros.

A macro is not a function, but simply replaces the relevant string in the program with the macro body before compilation (preprocessing phase).

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