Thread: difference between ++ and +=1

Originally Posted by nonoob

Just an FYI,
I read about the origin of "C", and how the compiler favored the reigning hardware platform of that time - PDP family of minis. So the post-increments and similar had a reason for being part of the language. There were native machine instructions of that ilk: access-then-increment. I haven't encountered any micro processors which had similar instructions but then again, the desired effect can be achieved with two instructions at most.

Both VAX (32-bit version of PDP-11 really) and 68000 have post-increment and pre-decrement versions of it's instruction set. I'm fairly sure that ARM's instructions also matches the C language fairly well with it's STR/LDR instructions when setting the P and W bits to one of the instruction.

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Mats