double conversion

This is a discussion on double conversion within the C++ Programming forums, part of the General Programming Boards category; How do I convert double 1.00 into int 1?...

  1. #1
    Registered User
    Join Date
    Mar 2007

    double conversion

    How do I convert double 1.00 into int 1?

  2. #2
    Registered User
    Join Date
    Jan 2008
    I'm not sure if this is correct, but why not use static_cast<int>(1.00). I'm not sure if it's written correctly, but it changes the double into an integer.

  3. #3
    Registered User mikeman118's Avatar
    Join Date
    Aug 2007
    double dbl = 1.00;
    int doubleToInt = (int)dbl;

  4. #4
    C++ Witch laserlight's Avatar
    Join Date
    Oct 2003
    Yeah, the static_cast as suggested by getName(C-Dub) is preferred to the C-style cast syntax as in mikeman118's example.

    It is probably safe to cast 1.00 to 1, but note that more generally it may be possible that what looks like an integer when printed may be less than that integral value, thus the truncation when casting to int may result in an integer smaller than expected.
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