What is a "stub function"? Why are stub functions useful in the development process?

Personally, for large development projects, they can be indispensable. You simply list out all the functions, or methods you will be using in classes or both, giving you the right file and a space in it to write the thing when you have to. That means you have a perfect opportunity to give yourself a gentle reminder with a couple of simple lines of code. int someFunctionGetsCalled() { cout <<"In function someFunctionGetsCalled, PROGRAM ME!" << endl; return 0; } Then, every time you build and run the other code that calls any of the stub functions, you get a nudge to remind you they exist and need attention. This is necessary because you will invariably need to adjust screen output, check for compile time or run time errors or just need to see that you're on track. Without some sort of stub function available, the code you're working on may have a dependency on a function you've not written, so it becomes a compiler error, *UNLESS* you have a stub function. Stub functions are always just the minimum you need for the language to accept it and, possibly, some screen output to remind you they are still stubs. I hope this adds to the idea. Good luck!