Thread: assignment operator... i think

  1. #1
    Sanity is for the weak! beene's Avatar
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    assignment operator... i think

    Hi
    I have come accross this in my programming book...

    Code:
    +=
    This is probably very easy but i have no idea what it is.

    Thanks in advance.

  2. #2
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    It takes the value you have and adds something to it.
    Its the same as doing:
    int a = 10;
    a= a+ 4;

  3. #3
    Sanity is for the weak! beene's Avatar
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    Thanks

  4. #4
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    There's a good chance that the index of your book lists these symbols before "A".

  5. #5
    Cat without Hat CornedBee's Avatar
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    Basically, C++ has quite a few "composite assignment" operators of the form op=, where op is any of [+, -, *, /, &#37;, &, |, ~, <<, >>] and perhaps more that I forgot. They all are defined such that
    expr1 op= expr2
    is equivalent to
    expr1 = expr1 op expr2
    except that expr1 is evaluated only once.
    All the buzzt!
    CornedBee

    "There is not now, nor has there ever been, nor will there ever be, any programming language in which it is the least bit difficult to write bad code."
    - Flon's Law

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