qt实现复杂的计算，复杂算法

实现复杂的计算，能计算各种所要求的数以及计算方式，代码完整

#include “mainwindow.h“
#include 

int main（int argc char *argv[]）
{
    QApplication a（argc argv）;
    MainWindow w;
    w.show（）;

    return a.exec（）;
}

 属性            大小     日期    时间   名称
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    .......     67646  2017-10-12 05:31  Calculate_demo\Calculate-master\Calculate.ico

    .......       476  2017-10-12 05:31  Calculate_demo\Calculate-master\Calculate.pro

    .......     18217  2017-10-12 05:31  Calculate_demo\Calculate-master\Calculate.pro.user

    .......      1668  2017-10-12 05:31  Calculate_demo\Calculate-master\ico.rc

    .......       172  2017-10-12 05:31  Calculate_demo\Calculate-master\main.cpp

    .......      7532  2017-10-12 05:31  Calculate_demo\Calculate-master\mainwindow.cpp

    .......      1101  2017-10-12 05:31  Calculate_demo\Calculate-master\mainwindow.h

    .......      9343  2017-10-12 05:31  Calculate_demo\Calculate-master\mainwindow.ui

    .......       149  2017-10-12 05:31  Calculate_demo\Calculate-master\README.md

    .......     61982  2017-10-12 05:31  Calculate_demo\Calculate-master\ShowPictures\1.png

    .......     22096  2017-10-12 05:31  Calculate_demo\Calculate-master\xycalculatethread.cpp

    .......      2405  2017-10-12 05:31  Calculate_demo\Calculate-master\xycalculatethread.h

    .......      4107  2017-10-12 05:31  Calculate_demo\Calculate-master\xytreemodel.cpp

    .......      1714  2017-10-12 05:31  Calculate_demo\Calculate-master\xytreemodel.h

     目录          0  2017-10-12 05:31  Calculate_demo\Calculate-master\ShowPictures

     目录          0  2017-10-12 05:31  Calculate_demo\Calculate-master

     目录          0  2017-10-30 13:42  Calculate_demo

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