03.27随机数产生、Lcd使用，文本框追加、

#include "ui_mainwindow.h"

#include <QDebug>

#include <QTime>

MainWindow::MainWindow(QWidget *parent) :

    QMainWindow(parent),

    ui(new Ui::MainWindow)

{

    ui->setupUi(this);

    qsrand(QTime(0,0,0).secsTo(QTime::currentTime()));

    inum = qrand()%2;

    connect(ui->btn0,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn1,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn2,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn3,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn4,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn5,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn6,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn7,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn8,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn9,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn_in,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

    connect(ui->btn_out,SIGNAL(clicked(bool)),this,SLOT(doProcessClinknum()));

}

?

MainWindow::~MainWindow()

{

    delete ui;

}

void MainWindow::doProcessClinknum (){

    QPushButton * one =(QPushButton *)sender();

    if(one->text()=="确认"){

     bool ok=0;

        if(inum==num.toInt(&ok)&&ok)

        {

            ui->textEdit->append("输入正确");

        }else if(inum<num.toInt(&ok)&&ok){

            ui->textEdit->append("输入过大");

        }else if(inum>num.toInt(&ok)&&ok){

            ui->textEdit->append("输入过小");

        }else{

            ui->textEdit->append("错误");

        }

        //qDebug()<<inum<<endl;

        num="0";

     }else if(one->text()=="取消"){

        this->close();

     }else{

        num=num+one->text();

     }

    ui->lcdNumber->display(num);

   // qDebug()<<name<<endl;

    qDebug()<<num<<endl;

}