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printf returns the number of characters printed (scanf also returns the number of characters input - special note: scanf cannot return a number greater than the % symbols in your scanf statement).
A function must have one point of entry and one point of exit. Only one return statement per function.
#include <stdio.h>
The hash tag (#) tells the compiler how to do things '''BEFORE''' compilation.
The include word brings in the code from inside <stdio.h>
