QT---简单的猜数字游戏

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>

namespace Ui {
class Widget;
}

class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = 0);
~Widget();
private slots:
void myjudge();
private:
Ui::Widget *ui;
int t;
int n;
int m;
void comp();
};

#endif // WIDGET_H

#include "widget.h"
#include "ui_widget.h"
#include <QTime>
#include <QMessageBox>
#include <QDebug>

Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
setWindowTitle(tr("猜猜看！"));
ui->lineEdit->setValidator(new QIntValidator(1,1000,this));

t=1;
QTime time;
time= QTime::currentTime();
qsrand(time.msec()+time.second()*1000);
n = qrand()%1000+1;
qDebug()<<tr("随机数为：")<<n;

connect(ui->okBtn,SIGNAL(clicked()),this,SLOT(myjudge()));

connect(ui->quitBtn,SIGNAL(clicked()),this,SLOT(close()));

}

Widget::~Widget()
{
delete ui;
}

void Widget::myjudge()
{
QString str=ui->lineEdit->text();
m=str.toInt();
if(str.isEmpty())
QMessageBox::warning(NULL,"warning","请输入一个正整数",QMessageBox::Ok);
else
comp();
}

void Widget::comp()
{
if(m>n)
{
ui->label_2->setText(tr("您输入的数比它大！"));
}
else {
if(m<n)
{
ui->label_2->setText(tr("您输入的数比它小！"));
}
else
ui->label_2->setText(tr("恭喜！您用了 %1 次就猜中了！").arg(t));
}

t++;

}

#include "widget.h"
#include <QApplication>

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

return a.exec();
}