Qt+C++桌面计算器源码

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Qt+C++桌面计算器源码

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前言

这篇博客针对<<Qt+C++桌面计算器源码>>编写代码，代码整洁，规则，易读。 学习与应用推荐首选。

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文章目录

一、所需工具软件

二、使用步骤

1. 引入库

2. 主要代码

3. 运行结果

三、在线协助

一、所需工具软件

1. VS, Qt

2. C++

二、使用步骤

1.引入库

代码如下（示例）：

#include <QDebug>
#include <iostream>
#include <cmath>
#include <QChar>
#include <QDialog>
#include <QFile>

​

2.主要代码

代码如下（示例）：

void MainWindow::Calc_Suffix()
{for(int i=0;i<out.size();i++){bool is_Num =true;out[i].toDouble(&is_Num);if(is_Num)//如果是数字，直接入栈{s2.push(out[i].toDouble(&is_Num));}else if(out[i]=='s'||out[i]=='c'||out[i]=='t'||out[i]=='^'){double x=s2.pop();if(out[i]=='s')x=sin(x);else if(out[i]=='c')x=cos(x);else if(out[i]=='t')x=tan(x);else if(out[i]=='l')x=log(x);else if(out[i]=='^'){int y=x;x=s2.pop();int z=x;for(int j=1;j<y;j++)x=x*z;}s2.push(x);}else if(out[i]=="+"||out[i]=="-"||out[i]=="*"||out[i]=="/")//如果是运算符，弹栈两次，并进行运算，运算后，结果入栈{double x=s2.pop();double y=s2.pop();if(out[i]=="+"){s2.push(y+x);}else if(out[i]=="-"){s2.push(y-x);}else if(out[i]=="*"){s2.push(y*x);}else if(out[i]=="/"){s2.push(y/x);}}}result = s2.pop();qDebug()<<result;
}void MainWindow::m_init()
{ba.clear();out.clear();
}void MainWindow::on_pushButton_clicked()
{in=ui->lineEdit->text();//获取表达式getChar();getSuffix();Calc_Suffix();ui->lineEdit->clear();//清空文本编辑框ui->lineEdit->setText(QString("%1%2").arg('=').arg(result));//显示结果m_init();
}void MainWindow::on_pushButton_2_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(0));
}void MainWindow::on_pushButton_3_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(1));
}void MainWindow::on_pushButton_4_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(2));
}void MainWindow::on_pushButton_5_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(3));
}void MainWindow::on_pushButton_6_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(4));
}void MainWindow::on_pushButton_7_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(5));
}void MainWindow::on_pushButton_8_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(6));
}void MainWindow::on_pushButton_9_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(7));
}void MainWindow::on_pushButton_10_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(8));
}void MainWindow::on_pushButton_11_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(9));
}void MainWindow::on_pushButton_12_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("+"));
}void MainWindow::on_pushButton_13_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("-"));
}void MainWindow::on_pushButton_14_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("*"));
}void MainWindow::on_pushButton_15_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("/"));
}void MainWindow::on_pushButton_20_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("."));
}void MainWindow::on_pushButton_18_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("("));
}void MainWindow::on_pushButton_19_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg(")"));
}void MainWindow::on_pushButton_16_clicked()
{//清空所有内容，并初始化ui->lineEdit->clear();m_init();
}void MainWindow::on_pushButton_17_clicked()
{//退格删除一个字符ui->lineEdit->backspace();
}void MainWindow::on_pushButton_21_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("sin"));
}void MainWindow::on_pushButton_22_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("cos"));
}void MainWindow::on_pushButton_23_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("tan"));
}void MainWindow::on_pushButton_24_clicked()//最小公倍数，c_mul
{QString str=ui->lineEdit->text();QString l1="0",l2="0";QByteArray yue = str.toLatin1();bool hasSpace = false;QString c_div="1";int max_yue;for(int i=0;i<yue.size();i++){char x=yue[i];if(x=='.')hasSpace=true;else if(x!='.'&&hasSpace)l2+=QString(x);elsel1+=QString(x);}int s1=l1.toInt(nullptr,10);int s2=l2.toInt(nullptr,10);int max;if(s1>s2)max=s1;elsemax=s2;for(int j=2;j<max;j++){if(s1 % j==0&&s2%j==0){max_yue=j;}}int z=s1*s2/max_yue;QString c_mul=QString::number(z);ui->lineEdit->setText(c_mul);
}void MainWindow::on_pushButton_25_clicked()//公约数,两个数以小数点分格
{QString str=ui->lineEdit->text();QString l1="0",l2="0";QByteArray yue = str.toLatin1();bool hasSpace = false;QString c_div="1";for(int i=0;i<yue.size();i++){char x=yue[i];if(x=='.')hasSpace=true;else if(x!='.'&&hasSpace)l2+=QString(x);elsel1+=QString(x);}int s1=l1.toInt(nullptr,10);int s2=l2.toInt(nullptr,10);int max;if(s1>s2)max=s1;elsemax=s2;for(int j=2;j<max;j++){if(s1 % j==0&&s2%j==0){c_div+="*";c_div+=QString::number(j);}}ui->lineEdit->setText(c_div);
}void MainWindow::on_pushButton_26_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("^"));
}void MainWindow::on_pushButton_27_clicked()
{QString str=ui->lineEdit->text();ui->lineEdit->setText(QString("%1%2").arg(str).arg("log"));
}

​

3.参数定义

代码如下（示例）：

if __name__ == '__main__':parser = argparse.ArgumentParser()parser.add_argument('--weights', nargs='+', type=str, default='yolov5_best_road_crack_recog.pt', help='model.pt path(s)')parser.add_argument('--img-size', type=int, default=640, help='inference size (pixels)')parser.add_argument('--conf-thres', type=float, default=0.25, help='object confidence threshold')parser.add_argument('--iou-thres', type=float, default=0.45, help='IOU threshold for NMS')parser.add_argument('--view-img', action='store_true', help='display results')parser.add_argument('--save-txt', action='store_true', help='save results to *.txt')parser.add_argument('--classes', nargs='+', type=int, default='0', help='filter by class: --class 0, or --class 0 2 3')parser.add_argument('--agnostic-nms', action='store_true', help='class-agnostic NMS')parser.add_argument('--augment', action='store_true', help='augmented inference')parser.add_argument('--update', action='store_true', help='update all models')parser.add_argument('--project', default='runs/detect', help='save results to project/name')parser.add_argument('--name', default='exp', help='save results to project/name')parser.add_argument('--exist-ok', action='store_true', help='existing project/name ok, do not increment')opt = parser.parse_args()

3.运行结果如下

 ​

三、在线协助：

如需安装运行环境或远程调试，见文章底部个人 QQ 名片，由专业技术人员远程协助！
1）远程安装运行环境，代码调试
2）Qt, C++, Python入门指导
3）界面美化
4）软件制作

 当前文章连接：https://blog.csdn.net/alicema1111/article/details/132608892

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