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Remove traling zeros from QString scientific notation num value

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  • L Offline
    L Offline
    LiamEvans210
    wrote on last edited by
    #1

    I have the next code, this code print a value in scientific notation, but i want to remove the trailing zeros

    valor = 541; QString cStyleResult = QString::number(valor.toDouble(), 'e');

    qDebug() << cStyleResult ;

    //////////////////////////////////////////////
    output: 5.410000e2

    I want to remove the trailing zeros(right decimal zeros), example I want to save only the value of 5.41

    some ideas????

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    Christian EhrlicherC jsulmJ 2 Replies Last reply
    0
    • L LiamEvans210

      I have the next code, this code print a value in scientific notation, but i want to remove the trailing zeros

      valor = 541; QString cStyleResult = QString::number(valor.toDouble(), 'e');

      qDebug() << cStyleResult ;

      //////////////////////////////////////////////
      output: 5.410000e2

      I want to remove the trailing zeros(right decimal zeros), example I want to save only the value of 5.41

      some ideas????

      Christian EhrlicherC Offline
      Christian EhrlicherC Offline
      Christian Ehrlicher
      Lifetime Qt Champion
      wrote on last edited by
      #2

      @LiamEvans210 Search for the 'e', remove all before it until it's != '0'

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      1 Reply Last reply
      0
      • L LiamEvans210

        I have the next code, this code print a value in scientific notation, but i want to remove the trailing zeros

        valor = 541; QString cStyleResult = QString::number(valor.toDouble(), 'e');

        qDebug() << cStyleResult ;

        //////////////////////////////////////////////
        output: 5.410000e2

        I want to remove the trailing zeros(right decimal zeros), example I want to save only the value of 5.41

        some ideas????

        jsulmJ Offline
        jsulmJ Offline
        jsulm
        Lifetime Qt Champion
        wrote on last edited by
        #3

        @LiamEvans210 You could also specify the precision (third parameter in QString::number()).

        https://forum.qt.io/topic/113070/qt-code-of-conduct

        1 Reply Last reply
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