Thread: Why does it read my '1,5' as a '1' ?

  1. #1
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    Question Why does it read my '1,5' as a '1' ?

    float a;
    cin >> a; cin.ignore();

    When I do the stepover, and add a watch for my 'a', somethings mysterious happens:

    I punch in 1,5
    But in the watchlist it says: a=1

    I've tried with double and int too, but nothing works!

    Someone knows what I'm missing here?

    Carl

  2. #2
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    Regardless of how things work in Euro, in C++ decimal points are periods.
    System: Debian Sid and FreeBSD 7.0. Both with GCC 4.3.

    Useful resources:
    comp.lang.c FAQ | C++ FQA Lite

  3. #3
    Reverse Engineer maxorator's Avatar
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    Commas are kind of separators not decimal points as zx-1 already said.
    "The Internet treats censorship as damage and routes around it." - John Gilmore

  4. #4
    and the hat of int overfl Salem's Avatar
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    Or you could read up on locale
    http://www.dinkumware.com/manuals/?m...ge=locale.html
    And set say LC_NUMERIC to something appropriate for you.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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