• Tyoda@lemm.ee
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    6 months ago

    In C an assignment is an expression where the value is the new value of what was being assigned to.

    In a = b = 1, both a and b will be 1.

    a = *(p = p + 1)
    

    is the same as

    p += 1
    a = *p
    

    , so ++p.

    • fluckx@lemmy.world
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      6 months ago

      What I meant was:

      In the screenshot it said x = *(++p) and iirc that is not the same as saying x = *(p++) or x = *(p += 1)

      As in my example using ++p will return the new value after increment and p++ or p+=1 will return the value before the increment happens, and then increment the variable.

      Or at least that is how I remember it working based on other languages.

      I’m not sure what the * does, but I’m assuming it might be a pointer reference? I’ve never really learned how to code in c or c++ specifically. Though in other languages ( like PHP which is based on C ) there is a distinct difference between ++p and (p++ or p+= 1)

      The last two behave the same. Though it has been years since I did a lot of coding. Which is why I asked.

      I’ll install the latest PHP runtime tonight and give it a try xD