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C++ inline Keyword


Example

Create an inline function:

inline int myFunction(int x, int y) {
  return x + y;
}

int main() {
  cout << myFunction(5, 3);
  return 0;
}

Try it Yourself »


Definition and Usage

The inline keyword suggests to the compiler that the code of a function should be inserted where the function is called. This can make a small function run a little faster, because the program does not have to jump to the function and back.

It is only a suggestion. The compiler decides for itself if it inserts the code or not.

inline also lets you define a function in a header file (a file that is included in other files) without errors.


Related Pages

Read more about functions in our C++ Functions Tutorial.


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