Qt課題之科學(xué)計(jì)算器.docx

QT作業(yè) 科學(xué)計(jì)算器QT課程作業(yè)設(shè)計(jì)題目：科學(xué)計(jì)算器小組成員：陳啟敬 201113010409劉陽(yáng) 201113010405何亞洲 201113010407王勇 201113010404黃昭宇 201113010421一、 功能設(shè)計(jì)要求： 特別聲明：本程序系QT5編譯制作科學(xué)計(jì)算器兩種計(jì)算器模式：一個(gè)普通模式，一個(gè)科學(xué)模式。參照windows7 的“計(jì)算器”程序說(shuō)明：在查看菜單下有兩個(gè)菜單項(xiàng)：“標(biāo)準(zhǔn)型”、“科學(xué)型”。當(dāng)用戶選擇標(biāo)準(zhǔn)型的時(shí)候，只有一個(gè)顯示區(qū)，顯示用戶當(dāng)前鍵入的數(shù)據(jù)或計(jì)算結(jié)果；當(dāng)用戶選擇科學(xué)型的時(shí)候，有兩個(gè)顯示區(qū)，其中最上面有個(gè)顯示用戶當(dāng)前鍵入的數(shù)據(jù) 或計(jì)算的結(jié)果，也就是標(biāo)準(zhǔn)型的顯示區(qū)，它的下面（MC 按鈕的左邊）有一個(gè)顯示區(qū)用來(lái)顯示當(dāng)前用戶臨時(shí)保存在Memory 中的數(shù)據(jù)。在編輯菜單下有“復(fù)制”和“粘貼”兩個(gè)菜單項(xiàng)，其功能與 windows的計(jì)算器一樣。幫助菜單下有“關(guān)于計(jì)算器”菜單項(xiàng)，點(diǎn)擊該菜單項(xiàng)時(shí) 彈出一個(gè)對(duì)話框，顯示版權(quán)信息（包含開(kāi)發(fā)者名字、學(xué)號(hào)）。功能介紹：對(duì)于計(jì)算器我們都很熟悉，在平常的生活中也經(jīng)常用到。本次設(shè)計(jì)的科學(xué)計(jì)算器不但可以計(jì)算普通的加減乘除運(yùn)算，還可以對(duì)于三角函數(shù)，乘方，對(duì)數(shù)等一些運(yùn)算。二、 詳細(xì)的設(shè)計(jì)介紹1 界面設(shè)計(jì) 界面設(shè)計(jì)我們是使用Qt creator進(jìn)行設(shè)計(jì)的，首先創(chuàng)建QMainWindow(parent).ui，這個(gè)界面為QWidget。然后在左側(cè)的Widget Box找相應(yīng)的控件添加到QMainWindow(parent)里。然后添加相應(yīng)的按鈕，lineEdit控件作為算式顯示窗口和結(jié)果顯示窗口，pushButton作為相應(yīng)數(shù)字和功能按鈕等，并將它們的名稱屬性修改。相應(yīng)的屬性修改： 動(dòng)作編輯器的設(shè)置：信號(hào)槽設(shè)置：設(shè)計(jì)出的界面如下： 標(biāo)準(zhǔn)型： 科學(xué)型：實(shí)現(xiàn)版權(quán)信息： 界面的相關(guān)代碼：#ifndef MAINWINDOW_H#define MAINWINDOW_H#include namespace Uiclass MainWindow;class MainWindow : public QMainWindow Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); MainWindow();private slots: /存儲(chǔ)槽口 void on_btnMjian_clicked(); void on_btnMjia_clicked(); void on_btnMS_clicked(); void on_btnMR_clicked(); void on_btnMC_clicked();void about();void copy();void paste(); /標(biāo)準(zhǔn)型和科學(xué)型槽口 void on_action_S_triggered(); void on_action_T_triggered(); /0-9槽函數(shù)的定義 void on_btn1_clicked(); void on_btn2_clicked(); void on_btn3_clicked(); void on_btn4_clicked(); void on_btn5_clicked(); void on_btn6_clicked(); void on_btn7_clicked(); void on_btn8_clicked(); void on_btn9_clicked(); void on_btn0_clicked(); void on_btnPoint_clicked();/點(diǎn) void additiveOperatorClicked(QString);/加法器 void multiplicativeOperatorClicked(QString);/乘法器 /void kuohaoOperatorClicked(QString);/括號(hào)運(yùn)算 void on_btnBackspace_clicked();/退格 void on_btnClear_clicked();/初始化 void on_btnPlus_clicked();/符號(hào)的改變 void on_btnCE_clicked();/清屏 void on_btnSqrt_clicked();/開(kāi)方 void on_btnPercent_clicked();/百分號(hào) void on_btn_1_x_clicked();/ 1/x void on_btnEql_clicked();/等于 void clickbtn1(QString);/數(shù)字 void clickbtn2(QString);/一元操作運(yùn)算 void on_btnAdd_clicked();/加 void on_btnSubtract_clicked();/減 void on_btnMultiply_clicked();/乘 void on_btnDivide_clicked();/除 void on_btnPi_clicked();/按鍵Pi void on_btnLn_clicked();/按鍵Ln void on_btnSinh_clicked();/按鍵sinh void on_btnSin_clicked();/按鍵Sin void on_btnX_2_clicked();/按鍵X2 void on_btnN_class_clicked();/按鍵N! void on_btnCosh_clicked();/按鍵Cosh void on_btnCos_clicked();/按鍵Cos void on_btnX_y_clicked();/按鍵xy void on_btnX_y_clicked();/按鍵xy void on_btnTanh_clicked();/按鍵tanh void on_btnTan_clicked();/按鍵tan void on_btnX_3_clicked();/按鍵x3 void on_btnX_3_clicked();/按鍵3x void on_btnExp_clicked();/按鍵e void on_btnMod_clicked();/按鍵mod void on_btnLog_clicked();/按鍵log void on_btn10_x_clicked();/按鍵10x void on_btnLkuo_clicked();/按鍵 ( void on_btnRkuo_clicked();/按鍵 )private: Ui:MainWindow *ui; QString B;/標(biāo)記等號(hào)狀態(tài) QString C;/標(biāo)記一元操作狀態(tài) QString D;/標(biāo)記add運(yùn)算符狀態(tài) QString E;/標(biāo)記mul運(yùn)算符狀態(tài) QString F;/標(biāo)記x_y,x_yQString K;/標(biāo)記括號(hào)狀態(tài)QString M; /QString G;/標(biāo)記x_y void abortOperation();/錯(cuò)誤判斷 double sumInMemory;/記憶存儲(chǔ) double sumSoFar;/加 double factorSoFar;/乘 double SoFar;/冪 double kuohao;/括號(hào) QString pendingAdditiveOperator; QString pendingMultiplicativeOperator; QString pendingOperator1; QString kuoOperator;/括號(hào)操作 bool calculate(double rightOperand, const QString &pendingOperator);#endif / MAINWINDOW_H2 計(jì)算功能的設(shè)計(jì)2.1關(guān)于計(jì)算機(jī)的初始化和相關(guān)版本的代碼：#include mainwindow.h#include ui_mainwindow.h#include QMessageBox#include /#define exp=2.71828/#define pi=3.14159MainWindow:MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui:MainWindow) ui-setupUi(this); ui-groupBox-hide();/科學(xué)計(jì)算框默認(rèn)隱藏 layout()-setSizeConstraint(QLayout:SetFixedSize); sumInMemory = 0.0;/變量初始化 sumSoFar = 0.0; factorSoFar = 0.0; SoFar=0.0; B=0; C=0; K=0; ui-lineEdit-setText(0); ui-lineEdit-setReadOnly(true);/將文本編輯框設(shè)置為不可更改 ui-lineEdit-setAlignment(Qt:AlignRight);/設(shè)置成右對(duì)齊 ui-lineEdit_2-setReadOnly(true);/將文本編輯框設(shè)置為不可更改 QFont font = ui-lineEdit-font();/設(shè)置字體 font.setPointSize(font.pointSize() + 6); ui-lineEdit-setFont(font);MainWindow:MainWindow() delete ui;void MainWindow:about()/關(guān)于計(jì)算器(A) QMessageBox:about(this, tr(關(guān)于計(jì)算器(A), tr(版本號(hào)： v1.0.0.0 開(kāi)發(fā)者： 陳啟敬 201113010409 劉陽(yáng) 201113010405 何亞洲 201113010407 王勇 201113010404 黃昭宇 201113010421);2.2.數(shù)字按鍵、等號(hào)等按鈕代碼： void MainWindow:on_btnEql_clicked()/按鍵=號(hào) if (!ui-lineEdit_2-text().contains(=) double operand = ui-lineEdit-text().toDouble(); QString A=ui-lineEdit-text(); if (!pendingOperator1.isEmpty() calculate(operand,pendingOperator1); operand = SoFar; SoFar = 0.0; pendingOperator1.clear(); if (!pendingMultiplicativeOperator.isEmpty() if (!calculate(operand, pendingMultiplicativeOperator) abortOperation(); return; operand = factorSoFar; factorSoFar = 0.0; pendingMultiplicativeOperator.clear(); if (!pendingAdditiveOperator.isEmpty() if (!calculate(operand, pendingAdditiveOperator) abortOperation(); return; pendingAdditiveOperator.clear(); else sumSoFar = operand; ui-lineEdit-setText(QString:number(sumSoFar); if(K !=1) if(C != 1) ui-lineEdit_2-setText(ui-lineEdit_2-text()+A+=+QString:number(sumSoFar); else ui-lineEdit_2-setText(ui-lineEdit_2-text()+=+QString:number(sumSoFar); else ui-lineEdit_2-setText(ui-lineEdit_2-text()+=+QString:number(sumSoFar); sumSoFar = 0.0; B=1; C=0; /0-9槽函數(shù)void MainWindow:on_btn0_clicked()/0號(hào)鍵的槽函數(shù) clickbtn1(0);void MainWindow:on_btn1_clicked()/1號(hào)鍵的槽函數(shù) clickbtn1(1);void MainWindow:on_btn2_clicked()/2號(hào)鍵的槽函數(shù) clickbtn1(2);void MainWindow:on_btn3_clicked()/3號(hào)鍵的槽函數(shù) clickbtn1(3);void MainWindow:on_btn4_clicked()/4號(hào)鍵的槽函數(shù) clickbtn1(4);void MainWindow:on_btn5_clicked()/5號(hào)鍵的槽函數(shù) clickbtn1(5);void MainWindow:on_btn6_clicked()/6號(hào)鍵的槽函數(shù) clickbtn1(6);void MainWindow:on_btn7_clicked()/7號(hào)鍵的槽函數(shù) clickbtn1(7);void MainWindow:on_btn8_clicked()/8號(hào)鍵的槽函數(shù) clickbtn1(8);void MainWindow:on_btn9_clicked()/9號(hào)鍵的槽函數(shù) clickbtn1(9);void MainWindow:on_btnPoint_clicked()/Point鍵的槽函數(shù) if (!ui-lineEdit-text().contains(.) ui-lineEdit-setText(ui-lineEdit-text() + tr(.);void MainWindow:on_btnBackspace_clicked()/backspace槽函數(shù)的定義 QString operand = ui-lineEdit-text(); operand.chop(1); if (operand.isEmpty() operand = 0; ui-lineEdit-setText(operand);void MainWindow:on_btnCE_clicked()/按鍵CE=清楚屏幕 ui-lineEdit-setText(0);2.3.計(jì)算槽的相關(guān)代碼：bool MainWindow:calculate(double rightOperand, const QString &pendingOperator)/計(jì)算槽，棧 if(pendingOperator=tr(+) sumSoFar+=rightOperand; else if(pendingOperator=tr(-) sumSoFar-=rightOperand; else if(pendingOperator=tr(*) factorSoFar*=rightOperand; else if(pendingOperator=tr(/) if (rightOperand=0.0) return false; factorSoFar /= rightOperand; else if(pendingOperator=tr(x_y) SoFar=pow(SoFar,rightOperand); else if(pendingOperator=tr(x_y) if(rightOperandlineEdit-text() = 0) ui-lineEdit-setText(btn); else if(!pendingOperator1.isEmpty() if(F!=0) ui-lineEdit-setText(btn); F = 0; else ui-lineEdit-setText(ui-lineEdit-text()+btn); else if(!pendingMultiplicativeOperator.isEmpty() if(D!=0) ui-lineEdit-setText(btn); D = 0; else ui-lineEdit-setText(ui-lineEdit-text()+btn); else if(!pendingAdditiveOperator.isEmpty() if(E!=0) ui-lineEdit-setText(btn); E = 0; else ui-lineEdit-setText(ui-lineEdit-text()+btn); else if(B!=1) ui-lineEdit-setText(ui-lineEdit-text()+btn); else ui-lineEdit-setText(btn); B=0; 2.4.一元操作運(yùn)算的相關(guān)代碼：void MainWindow:clickbtn2(QString btn)/一元操作運(yùn)算 double operand = ui-lineEdit-text().toDouble(); double result = 0.0; if(btn=tr(Sqrt) if(operand0.0) abortOperation(); return; result=sqrt(operand); else if(btn=tr(x_3) if(operand0.0) abortOperation(); return; result=pow(operand,1.0/3.0); else if(btn=tr(pi) result=3.14159; else if(btn=tr(exp) result=2.71828; else if(btn=tr(x_2) result=pow(operand, 2.0); else if(btn=tr(10_x) result=pow(10.0, operand); else if(btn=tr(x_3) result=pow(operand, 3.0); else if(btn=tr(%) result=operand/100.0; else if(btn=tr(1/x) if(operand=0.0) abortOperation(); return; result=1.0/operand; else if(btn=tr(ln) if(operand0.0) abortOperation(); return; result=log(operand); QString str = QString:number(result,f,4); result=str.toDouble(); else if(btn=tr(log10) if(operand0.0) for(i=2;i=operand;i+) j*=i; result=j; else if(operandlineEdit-setText(QString:number(result);void MainWindow:abortOperation()/abortOperation的定義 on_btnClear_clicked(); ui-lineEdit-setText(tr(Error);2.5.計(jì)算器運(yùn)算實(shí)現(xiàn)代碼：void MainWindow:additiveOperatorClicked(QString clickedOperator)/加法器 double operand = ui-lineEdit-text().toDouble(); double A = ui-lineEdit-text().toDouble(); if (!pendingOperator1.isEmpty() calculate(operand,pendingOperator1); operand = SoFar; ui-lineEdit-setText(QString:number(SoFar); SoFar = 0.0; /pendingOperator1.clear(); if (!pendingMultiplicativeOperator.isEmpty() if (!calculate(operand, pendingMultiplicativeOperator) abortOperation(); return; ui-lineEdit-setText(QString:number(factorSoFar); operand = factorSoFar; factorSoFar = 0.0; /pendingMultiplicativeOperator.clear(); if (!pendingAdditiveOperator.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(A)+clickedOperator); if (!calculate(operand, pendingAdditiveOperator) abortOperation(); return; ui-lineEdit-setText(QString:number(sumSoFar); else sumSoFar = operand; if(!pendingOperator1.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(A)+clickedOperator); else if(!pendingMultiplicativeOperator.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(A)+clickedOperator); else if(K!=0) ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(operand)+clickedOperator); else ui-lineEdit_2-setText(QString:number(operand)+clickedOperator); pendingMultiplicativeOperator.clear(); pendingOperator1.clear(); E = 1; pendingAdditiveOperator = clickedOperator;void MainWindow:multiplicativeOperatorClicked(QString clickedOperator)/乘法器 double operand = ui-lineEdit-text().toDouble(); double A = ui-lineEdit-text().toDouble(); if (!pendingOperator1.isEmpty() calculate(operand,pendingOperator1); operand = SoFar; ui-lineEdit-setText(QString:number(SoFar); SoFar = 0.0; /pendingOperator1.clear(); if (!pendingMultiplicativeOperator.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(A)+clickedOperator); if (!calculate(operand, pendingMultiplicativeOperator) abortOperation(); return; ui-lineEdit-setText(QString:number(factorSoFar); else factorSoFar = operand; if(!pendingOperator1.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(A)+clickedOperator); else if(!pendingAdditiveOperator.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(A)+clickedOperator); else if(K!=0) ui-lineEdit_2-setText(ui-lineEdit_2-text()+QString:number(operand)+clickedOperator); else ui-lineEdit_2-setText(QString:number(operand)+clickedOperator); pendingOperator1.clear(); pendingMultiplicativeOperator = clickedOperator; D = 1;/MC，MR，MS，M+，M-槽的定義void MainWindow:on_btnMC_clicked()/按鍵MC=memory clear sumInMemory = 0.0; ui-lineEdit_2-setText(M=0);/edit_2顯示存儲(chǔ)中的數(shù)據(jù) ui-lineEdit-setText(0);void MainWindow:on_btnMR_clicked()/按鍵MR=memory read C = 1; ui-lineEdit-setText(QString:number(sumInMemory); QString M=QString:number(sumInMemory); if(!pendingAdditiveOperator.isEmpty()|!pendingMultiplicativeOperator.isEmpty() ui-lineEdit_2-setText(ui-lineEdit_2-text()+M); else ui-lineEdit_2-setText(M=+QString:number(sumInMemory);void MainWindow:on_btnMS_clicked()/按鍵MS=memory save on_btnEql_clicked(); sumInMemory = ui-lineEdit-text().toDouble(); ui-lineEdit_2-setText(M=+QString:number(sumInMemory);/edit_2顯示存儲(chǔ)中的數(shù)據(jù)void MainWindow:on_btnMjia_clicked()/按鍵M+ on_btnEql_clicked(); sumInMemory += ui-lineEdit-text().toDouble(); ui-lineEdit_2-setText(M=+QString:number(sumInMemory);/edit_2顯示存儲(chǔ)中的數(shù)據(jù)void MainWindow:on_btnMjian_clicked()/按鍵M- on_btnEql_clicked(); sumInMemory-=ui-lineEdit-text().toDouble(); ui-lineEdit_2-setText(M=+QString:number(sumInMemory);/edit_2顯示存儲(chǔ)中的數(shù)據(jù)void MainWindow:on_btnAdd_clicked()/+號(hào)鍵 additiveOperatorClicked(+); C = 0; if(B != 0) ui-lineEdit_2-setText(ui-lineEdit-text()+); void MainWindow:on_btnSubtract_clicked()/-號(hào)鍵 additiveOperatorClicked(-); C = 0; if(B != 0) ui-lineEdit_2-setText(ui-lineEdit-text()+-); /else ui-lineEdit_2-setText(ui-lineEdit-text()+-);void MainWindow:on_btnMultiply_clicked()/*號(hào)鍵 multiplicativeOperatorClicked(*); C = 0; if(B != 0) ui-lineEdit_2-setText(ui-lineEdit-text()+*); void MainWindow:on_btnDivide_clicked()/號(hào)鍵 multiplicativeOperatorClicked(/); C = 0; if(B !=