What are some use cases for function pointers in C++?

What are some use cases for function pointers in C++?

Function pointers in C++ can be used for callbacks, implementing polymorphism, and creating event-driven programs.

Can you give an example of a callback using function pointers?

Sure! You can define a function pointer type and pass it to another function to be called later, like this:

void callbackFunction() {
    std::cout << "Callback executed!";
}

void executeCallback(void (*func)()) {
    func(); // Call the function pointer
}

int main() {
    executeCallback(callbackFunction);
    return 0;
}
}```

What about using function pointers for sorting algorithms?

Function pointers can be used to pass different comparison functions to sorting algorithms, allowing for flexible sorting criteria.

Are there any downsides to using function pointers?

Yes, function pointers can make code harder to read and maintain, and they can lead to errors if not used carefully.