Shifts and masks
Move bits with << and >>, build masks, and pack and unpack fields such as the red, green and blue parts of a colour.
- The skill
- Move bits into place with shifts and pull fields out of a packed number with masks.
- You make
- A colour splitter for web colours, a packet header reader and a save game packed into one number.
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Builds on 34 Bitwise operators. Free to try: C Foundations and the playground.
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exercise_1.c
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4 exercises in this lesson, checked as you type. Premium opens every lesson after Foundations, in all four courses.
C, 32-bit: int and pointers are 4 bytes