Ace Your C++ Skills 2025 – Rock the ‘Thinking in C++’ Challenge!

Question: 1 / 565

What is required for an inline function to be effective?

The function must be declared as static.

The function body must be included with its declaration.

An inline function is a function that is expanded at the point of call. Its body must be included with its declaration in order for it to be effective. This allows the compiler to replace the function call with the body of the function, reducing the overhead of function calls. Declaring a function as static would not necessarily make it an inline function, so option A is incorrect. Option C is incorrect because an inline function does not have to return an integer. Option D is incorrect because a function being called in a loop does not determine whether it is an inline function or not.

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The function must return an integer.

The function must be called within a loop.

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