65. Pointer-iii

Question.1

A function returns a pointer to a local variable:

int* get_config() {
   int timeout = 500;
   return &timeout;
}

int *cfg = get_config();
printf("%d", *cfg);

What happens?

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Prints 500 — the value is preserved after the function returns
Undefined behavior — timeout is a local variable that no longer exists after get_config
Prints 0 — local variables are zeroed after function exit
Compilation error — you cannot return a pointer to a local