91. Basics of Classes

Question.5

A developer creates a GPIO class with an initializer list:

class GPIO {
   int pin;
   bool state;
public:
   GPIO(int p) : pin(p), state(false) {
       configure_pin(pin);
   }
};

GPIO led(13);

When is pin initialized?

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After the constructor body runs
During the initializer list, before the constructor body -- pin is set to 13 before configure_pin runs
Only when first accessed
At compile time

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