#include "widget4.h"

Widget4::Widget4(QWidget *parent) : QWidget(parent)
{
    setWindowTitle("题目4");
    setFixedSize(800,600);

    btn = new QPushButton("按钮",this);
    btn->setFixedSize(200,100);
    btn->move(10,10);

    edit1 = new QLineEdit(this);
    edit1->move(10,120);
    edit2 = new QLineEdit(this);
    edit2->move(10,160);

    label = new QLabel("占位",this);
    label->move(300,140);

    connect(btn,&QPushButton::clicked,[&]()->void{
                QString str1 = edit1->text();
                QString str2 = edit2->text();
                int res_num = str1.toInt()+str2.toInt();

                label->setNum(res_num);
            });
}