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In which versions of the Arduino IDE can the PROGMEM Utility be used without declaration in the Arduino code?

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In which versions of the Arduino IDE can the PROGMEM Utility be used without declaration in the Arduino code?

(a) Any Arduino IDE version above 2.0

(b) Any Arduino IDE version above 1.0

(c) Any Arduino IDE version below 1.0

(d) Any Arduino IDE version above 3.1

I had been asked this question in homework.

I would like to ask this question from PROGMEM Utility topic in portion Arduino Programming of Arduino

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Right choice is (b) Any Arduino IDE version above 1.0

The explanation is: PROGMEM is part of the avr/pgmspace.h library. It is imported automatically in the more recent versions of the Arduino IDE. However, if one is using an IDE version below 1.0, then the header must be included first at the top of the code.

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