What happens if I cast a function pointer, changing the number of parameters

Question

I\'m just beginning to wrap my head around function pointers in C. To understand how casting of function pointers works, I wrote the following program. It basically creates

Answer 1

If you take a car and cast it as a hammer the compiler will take you at your word that the car is a hammer but this does not turn the car into a hammer. The compiler may be successful in using the car to drive a nail but that is implementation dependent good fortune. It is still an unwise thing to do.