Where does `getchar()` store the user input?

Question

I\'ve started reading \"The C Programming Language\" (K&R) and I have a doubt about the getchar() function.

For example this code:

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Answer 1

Your first program only reads one character, prints it out, and exits. Your second program has a loop. It keeps reading characters one at a time and printing them out until it reads an EOF character. Only one character is stored at any given time.