#include "dialog.h"

#include "ui_dialog.h"

#include<QPushButton>

#include<QDebug>

#include<QtMath>

    const char *a;

Dialog::Dialog(QWidget *parent) :

    QDialog(parent),

    ui(new Ui::Dialog)

{

    ui->setupUi(this);

    connect(ui->pushButton_58,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_59,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_53,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_54,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_55,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_3,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_2,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_68,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_69,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_70,SIGNAL(clicked()),this,SLOT(showdigit()));

    connect(ui->pushButton_71,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_72,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_4,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_37,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_57,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_56,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_62,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_61,SIGNAL(clicked()),this,SLOT(caculate()));

    connect(ui->pushButton_60,SIGNAL(clicked()),this,SLOT(result()));

}

Dialog::~Dialog()

{

    delete ui;

}

void Dialog::showdigit()

{

    QString tmp = ui->label->text();

    if(ui->pushButton_58==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_59==(QPushButton *)sender())

    {

        tmp +=".";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_53==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_54==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_55==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_2==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_3==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_68==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_69==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

    if(ui->pushButton_70==(QPushButton *)sender())

    {

        tmp +="";

        ui->label->setText(tmp);

    }

}

void Dialog::caculate()

{

    QString tmp = ui->label->text();

    d1 = tmp.toDouble();

    if(ui->pushButton_71==(QPushButton *)sender())

    {

        a = "+";

    }

            if(ui->pushButton_72==(QPushButton *)sender())

            {

                a = "/";

            }

            if(ui->pushButton_4==(QPushButton *)sender())

            {

                a = "s";//sqrt

            }

            if(ui->pushButton_37==(QPushButton *)sender())

            {

                a = "-";

            }

            if(ui->pushButton_57==(QPushButton *)sender())

            {

                a = "x";//x^2

            }

            if(ui->pushButton_56==(QPushButton *)sender())

            {

                a = "*";

            }

            if(ui->pushButton_62==(QPushButton *)sender())

            {

                a = "%";

            }

            if(ui->pushButton_61==(QPushButton *)sender())

            {

                ui->label->setText(" ");

            }

            ui->label->setText("");

}

void Dialog::result()

{

//qDebug()<<"hello";

QString tmp = ui->label->text();

d2 = tmp.toDouble();

QString tmp1;

        if(a=="-")

        {

            tmp1.setNum((d1-d2));

            ui->label->setText(tmp1);

        }

    if(a=="+")

    {

        tmp1.setNum((d1+d2));

        ui->label->setText(tmp1);

    }

    if(a=="%")

    {

        tmp1.setNum(((int)d1%(int)d2));

        ui->label->setText(tmp1);

    }

    if(a=="x")

    {

        tmp1.setNum((d1*d1));

        ui->label->setText(tmp1);

    }

    if(a=="*")

    {

        tmp1.setNum((d1*d2));

        ui->label->setText(tmp1);

    }

    if(a=="s")

    {

        tmp1.setNum((qSqrt(d1)));

        ui->label->setText(tmp1);

    }

    if(a=="/")

    {

        tmp1.setNum((d1/d2));

        ui->label->setText(tmp1);

    }

#include "dialog.h"

#include <QApplication>

int main(int argc, char *argv[])

{

    QApplication a(argc, argv);

    Dialog w;

    w.show();

    return a.exec();

}

#ifndef DIALOG_H

#define DIALOG_H

#include <QDialog>

namespace Ui {

class Dialog;

}

class Dialog : public QDialog

{

    Q_OBJECT

public:

     Dialog(QWidget *parent = );

    ~Dialog();

private:

    Ui::Dialog *ui;

    double d1,d2;

public slots:

        void showdigit();

        void caculate();

        void result();

};

#endif // DIALOG_H

#-------------------------------------------------

#

# Project created by QtCreator --25T20::

#

#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, ): QT += widgets

TARGET = caculate

TEMPLATE = app

SOURCES += main.cpp\

        dialog.cpp

HEADERS  += dialog.h

FORMS    += dialog.ui