基于Qt和C++实现的存款/贷款计算器+源码

#pragma execution_character_set("utf-8") #include "widget.h" #include "ui_widget.h" #include "qmessagebox.h" #include "qdebug.h" Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); this->initForm(); } Widget::~Widget() { delete ui; } void Widget::initForm() { QDateTime now = QDateTime::currentDateTime(); ui->dateStart->setDate(now.date()); ui->dateEnd->setDate(now.date().addYears(1)); } void Widget::on_btnCalc_clicked() { //当前多少钱 int moneyCurrent = ui->txtMoneyCurrent->text().toInt(); //利息 float rate = ui->txtRate->text().toFloat(); //定期期限 int year = ui->cboxYear->currentText().left(1).toInt(); //总年份 必须是定期期限的倍数 int years = ui->txtYears->text().toInt(); //最终多少钱 int moneyAll = 0; if (years % year != 0) { ui->txtYears->setFocus(); QMessageBox::critical(this, "错误", "总年份必须是期限的整数倍数!"); return; } if (ui->cboxType->currentIndex() == 0) { //傻瓜场景 直接计算 moneyAll = moneyCurrent + (moneyCurrent * rate * years); } else { //真实场景 复利计算 int count = years / year; for (int i = 0; i < count; ++i) { moneyCurrent = moneyCurrent + (moneyCurrent * rate * year); } moneyAll = moneyCurrent; } //计算下来3年期定期存款30年总金额翻2番到最初本金3倍 100W本金3年期自动续期30年=321W QString value = QString::number(moneyAll); ui->txtMoneyAll->setText(value); //拷贝到其他地方 if (ui->rbtn1->isChecked()) { ui->txtValue1->setText(value); } else { ui->txtValue2->setText(value); } //计算两种存款方式的差额 比如1年期存3年和3年期存3年 QString value1 = ui->txtValue1->text().trimmed(); QString value2 = ui->txtValue2->text().trimmed(); if (!value1.isEmpty() && !value2.isEmpty()) { int value = qAbs(value1.toInt() - value2.toInt()); ui->txtValue->setText(QString::number(value)); } } void Widget::on_btnCalc2_clicked() { //计算天数 QDateTime dateStart = ui->dateStart->dateTime(); QDateTime dateEnd = ui->dateEnd->dateTime(); int day = dateStart.daysTo(dateEnd); int money = ui->txtMoney2->text().toInt(); float rate = ui->txtRate2->text().toFloat(); int result = money * rate * day; ui->txtResult2->setText(QString::number(result)); qDebug() << day; }