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Предмет:
Файл:Решения лабораторных работ (местами есть ошибки) / Lab6_Calc / mainwindow
.cpp#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::on_pushButton_clicked()
{
double a = ui->lineEdit->text().toDouble();
double b = ui->lineEdit_2->text().toDouble();
double result = 0;
QString op = ui->comboBox->currentText();
if (op == "+") result = a + b;
if (op == "–") result = a - b;
if (op == "×") result = a * b;
if (op == "÷") result = a / b;
if (op == "^") result = pow(a, b);
QTableWidgetItem * operandA = new QTableWidgetItem(QString::number(a));
operandA->setTextAlignment(Qt::AlignCenter);
QTableWidgetItem * operandB = new QTableWidgetItem(QString::number(b));
operandB->setTextAlignment(Qt::AlignCenter);
QTableWidgetItem * this_operator = new QTableWidgetItem(op);
this_operator->setTextAlignment(Qt::AlignCenter);
QTableWidgetItem * rs = new QTableWidgetItem(QString::number(result));
rs->setTextAlignment(Qt::AlignCenter);
ui->tableWidget->setRowCount(ui->tableWidget->rowCount() + 1);
ui->tableWidget->setItem(ui->tableWidget->rowCount() - 1, 0, operandA);
ui->tableWidget->setItem(ui->tableWidget->rowCount() - 1, 1, this_operator);
ui->tableWidget->setItem(ui->tableWidget->rowCount() - 1, 2, operandB);
ui->tableWidget->setItem(ui->tableWidget->rowCount() - 1, 3, rs);
}
void MainWindow::on_actionAddition_triggered()
{
ui->comboBox->setCurrentIndex(0);
MainWindow::on_pushButton_clicked();
}
void MainWindow::on_actionSubtraction_triggered()
{
ui->comboBox->setCurrentIndex(1);
MainWindow::on_pushButton_clicked();
}
void MainWindow::on_actionMultiplication_triggered()
{
ui->comboBox->setCurrentIndex(2);
MainWindow::on_pushButton_clicked();
}
void MainWindow::on_actionDivision_triggered()
{
ui->comboBox->setCurrentIndex(3);
MainWindow::on_pushButton_clicked();
}
void MainWindow::on_actionExponentiation_triggered()
{
ui->comboBox->setCurrentIndex(4);
MainWindow::on_pushButton_clicked();
}
void MainWindow::on_pushButton_3_clicked()
{
ui->tableWidget->removeRow(ui->tableWidget->currentRow());
}
void MainWindow::on_pushButton_2_clicked()
{
ui->tableWidget->setRowCount(0);
}