#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
a.clear();
b.clear();
}
Widget::~Widget()
{
delete ui;
}
void Widget::on_pushButton_1_clicked()
{
a += "1";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_2_clicked()
{
a += "2";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_3_clicked()
{
a += "3";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_4_clicked()
{
a += "4";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_5_clicked()
{
a += "5";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_6_clicked()
{
a += "6";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_7_clicked()
{
a += "7";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_8_clicked()
{
a += "8";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_9_clicked()
{
a += "9";
ui->lineEdit->setText(a);
}
void Widget::on_pushButton_0_clicked()
{
a += "0";
ui->lineEdit->setText(a);
}
//加法
void Widget::on_pushButton_add_clicked()
{
b.insert(0,a);
a.clear();
b.insert(1,"+");
ui->lineEdit->setText(a);
}
//等于
void Widget::on_pushButton_equit_clicked()
{
if (!a.isEmpty() && !b.isEmpty()) {
b.insert(2, a);
int v3;
if (b.at(1) == "+") {
v3 = QString(b.at(0)).toInt() + QString(b.at(2)).toInt();
ui->lineEdit->setText(QString::number(v3));
} else if (b.at(1) == "-") {
v3 = QString(b.at(0)).toInt() - QString(b.at(2)).toInt();
ui->lineEdit->setText(QString::number(v3));
} else if (b.at(1) == "*") {
v3 = QString(b.at(0)).toInt() * QString(b.at(2)).toInt();
ui->lineEdit->setText(QString::number(v3));
} else if (b.at(1) == "/") {
v3 = QString(b.at(0)).toInt() / QString(b.at(2)).toInt();
ui->lineEdit->setText(QString::number(v3));
}
// 清空a和b，同时将结果保存到a，以便后续计算
a = QString::number(v3);
b.clear();
}
else {
b.insert(0, a);
a.clear();
}
}
//减法
void Widget::on_pushButton_Sub_clicked()
{
b.insert(0,a);
a.clear();
b.insert(1,"-");
ui->lineEdit->setText(a);
}
//乘法
void Widget::on_pushButton_Mult_clicked()
{
b.insert(0,a);
a.clear();
b.insert(1,"*");
ui->lineEdit->setText(a);
}
//除法
void Widget::on_pushButton_divi_clicked()
{
b.insert(0,a);
a.clear();
b.insert(1,"/");
ui->lineEdit->setText(a);
}
//清除键
void Widget::on_pushButton_clear_clicked()
{
a.clear();
b.clear();
ui->lineEdit->setText("0");
}
