MFC简单计算器（我的实验报告1.2版本）-CFANZ编程社区

和上一篇思想一样，详解看上一篇，我就直接给全部代码了。这一篇继承了上一篇所有的功能，还增加了连续加或连续除、减、乘，但是做不到a+b-c或a-b+c,也就是不能换符号，这个就是困惑了我第一天一整天的地方，最后查了一天也解决不了，我还想到用正则表达式和我1.3版本思想的结合版本1.4，可是，我不会用正则表达式来分割字符串，所以做出了这1.2为1.1改良版，1.3思想转变的铺垫版。现在也是有个bug，等待大佬解救。不过，还是可以应付交作业的。

效果如下：

MFC简单计算器（我的实验报告1.2版本）_程序代码

代码区（全部代码，后面有提示有用部分，请耐心看，也可以选择另外2个版本）：

第一部分代码是不需我们打的，这里展示只是方便知道是哪个文件里的

// MFCApplication11Dlg.cpp: 实现文件
//

#include "stdafx.h"
#include "MFCApplication11.h"
#include "MFCApplication11Dlg.h"
#include "afxdialogex.h"

#ifdef
#define
#endif


// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialogEx
{
public:
  CAboutDlg();

  // 对话框数据
#ifdef
  enum { IDD = IDD_ABOUTBOX };
#endif

protected:
  virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
  DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(IDD_ABOUTBOX)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
  CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()


// CMFCApplication11Dlg 对话框



CMFCApplication11Dlg::CMFCApplication11Dlg(CWnd* pParent /*=nullptr*/)
  : CDialogEx(IDD_MFCAPPLICATION11_DIALOG, pParent)
{
  m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMFCApplication11Dlg::DoDataExchange(CDataExchange* pDX)
{
  CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CMFCApplication11Dlg, CDialogEx)
  ON_WM_SYSCOMMAND()
  ON_WM_PAINT()
  ON_WM_QUERYDRAGICON()
  ON_BN_CLICKED(IDC_BUTTON1, &CMFCApplication11Dlg::OnBnClickedButton1)
  ON_BN_CLICKED(IDC_BUTTON2, &CMFCApplication11Dlg::OnBnClickedButton2)
  ON_BN_CLICKED(IDC_BUTTON3, &CMFCApplication11Dlg::OnBnClickedButton3)
  ON_BN_CLICKED(IDC_BUTTON4, &CMFCApplication11Dlg::OnBnClickedButton4)
  ON_BN_CLICKED(IDC_BUTTON5, &CMFCApplication11Dlg::OnBnClickedButton5)
  ON_BN_CLICKED(IDC_BUTTON6, &CMFCApplication11Dlg::OnBnClickedButton6)
  ON_BN_CLICKED(IDC_BUTTON7, &CMFCApplication11Dlg::OnBnClickedButton7)
  ON_BN_CLICKED(IDC_BUTTON8, &CMFCApplication11Dlg::OnBnClickedButton8)
  ON_BN_CLICKED(IDC_BUTTON9, &CMFCApplication11Dlg::OnBnClickedButton9)
  ON_BN_CLICKED(IDC_BUTTON10, &CMFCApplication11Dlg::OnBnClickedButton10)
  ON_BN_CLICKED(IDC_BUTTONPOINT, &CMFCApplication11Dlg::OnBnClickedButtonpoint)
  ON_BN_CLICKED(IDC_BUTTON12, &CMFCApplication11Dlg::OnBnClickedButton12)
  ON_BN_CLICKED(IDC_BUTTONADD, &CMFCApplication11Dlg::OnBnClickedButtonadd)
  ON_BN_CLICKED(IDC_BUTTONSUB, &CMFCApplication11Dlg::OnBnClickedButtonsub)
  ON_BN_CLICKED(IDC_BUTTONMUL, &CMFCApplication11Dlg::OnBnClickedButtonmul)
  ON_BN_CLICKED(IDC_BUTTONDIV, &CMFCApplication11Dlg::OnBnClickedButtondiv)
  ON_BN_CLICKED(IDC_BUTTONBACK, &CMFCApplication11Dlg::OnBnClickedButtonback)
  ON_BN_CLICKED(IDC_BUTTONCLEAR, &CMFCApplication11Dlg::OnBnClickedButtonclear)
  ON_BN_CLICKED(IDC_BUTTONJIECHENG, &CMFCApplication11Dlg::OnBnClickedButtonjiecheng)
  ON_BN_CLICKED(IDC_BUTTONSIN, &CMFCApplication11Dlg::OnBnClickedButtonsin)
  ON_BN_CLICKED(IDC_BUTTONCOS, &CMFCApplication11Dlg::OnBnClickedButtoncos)
  ON_BN_CLICKED(IDC_BUTTON30, &CMFCApplication11Dlg::OnBnClickedButton30)
  ON_BN_CLICKED(IDC_BUTTONABOUT, &CMFCApplication11Dlg::OnBnClickedButtonabout)
  
  ON_BN_CLICKED(IDC_BUTTONPINFANG, &CMFCApplication11Dlg::OnBnClickedButtonpinfang)
  ON_BN_CLICKED(IDC_BUTTONKAIFANG, &CMFCApplication11Dlg::OnBnClickedButtonkaifang)
  ON_BN_CLICKED(IDC_BUTTON26, &CMFCApplication11Dlg::OnBnClickedButton26)
  ON_BN_CLICKED(IDC_BUTTONLOG, &CMFCApplication11Dlg::OnBnClickedButtonlog)
  ON_BN_CLICKED(IDC_BUTTONLN, &CMFCApplication11Dlg::OnBnClickedButtonln)
  ON_BN_CLICKED(IDC_BUTTON29, &CMFCApplication11Dlg::OnBnClickedButton29)
  ON_BN_CLICKED(IDC_BUTTON31, &CMFCApplication11Dlg::OnBnClickedButton31)
  ON_BN_CLICKED(IDC_BUTTONEQUAL, &CMFCApplication11Dlg::OnBnClickedButtonequal)
END_MESSAGE_MAP()


// CMFCApplication11Dlg 消息处理程序

BOOL CMFCApplication11Dlg::OnInitDialog()
{
  CDialogEx::OnInitDialog();

  // 将“关于...”菜单项添加到系统菜单中。

  // IDM_ABOUTBOX 必须在系统命令范围内。
  ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
  ASSERT(IDM_ABOUTBOX < 0xF000);

  CMenu* pSysMenu = GetSystemMenu(FALSE);
  if (pSysMenu != nullptr)
  {
    BOOL bNameValid;
    CString strAboutMenu;
    bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
    ASSERT(bNameValid);
    if (!strAboutMenu.IsEmpty())
    {
      pSysMenu->AppendMenu(MF_SEPARATOR);
      pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
    }
  }

  // 设置此对话框的图标。  当应用程序主窗口不是对话框时，框架将自动
  //  执行此操作
  SetIcon(m_hIcon, TRUE);      // 设置大图标
  SetIcon(m_hIcon, FALSE);    // 设置小图标

  // TODO: 在此添加额外的初始化代码

  return TRUE;  // 除非将焦点设置到控件，否则返回 TRUE
}

void CMFCApplication11Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
  if ((nID & 0xFFF0) == IDM_ABOUTBOX)
  {
    CAboutDlg dlgAbout;
    dlgAbout.DoModal();
  }
  else
  {
    CDialogEx::OnSysCommand(nID, lParam);
  }
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。  对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CMFCApplication11Dlg::OnPaint()
{
  if (IsIconic())
  {
    CPaintDC dc(this); // 用于绘制的设备上下文

    SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

    // 使图标在工作区矩形中居中
    int cxIcon = GetSystemMetrics(SM_CXICON);
    int cyIcon = GetSystemMetrics(SM_CYICON);
    CRect rect;
    GetClientRect(&rect);
    int x = (rect.Width() - cxIcon + 1) / 2;
    int y = (rect.Height() - cyIcon + 1) / 2;

    // 绘制图标
    dc.DrawIcon(x, y, m_hIcon);
  }
  else
  {
    CDialogEx::OnPaint();
  }
}

//当用户拖动最小化窗口时系统调用此函数取得光标
//显示。
HCURSOR CMFCApplication11Dlg::OnQueryDragIcon()
{
  return static_cast<HCURSOR>(m_hIcon);
}

前面都是没用的，后面是自己打的，有用的

double num1 = 0.0, num2 = 0.0; static  double result = 0.0;
const double EPSINON = 0.00001;
CString temp;
int opt; int Ctime = 0;

void CMFCApplication11Dlg::OnBnClickedButton1()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("1"));
}


void CMFCApplication11Dlg::OnBnClickedButton2()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("2"));
}


void CMFCApplication11Dlg::OnBnClickedButton3()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("3"));
}


void CMFCApplication11Dlg::OnBnClickedButton4()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("4"));
}


void CMFCApplication11Dlg::OnBnClickedButton5()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("5"));
}


void CMFCApplication11Dlg::OnBnClickedButton6()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("6"));
}


void CMFCApplication11Dlg::OnBnClickedButton7()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("7"));
}


void CMFCApplication11Dlg::OnBnClickedButton8()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("8"));
}


void CMFCApplication11Dlg::OnBnClickedButton9()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("9"));
}


void CMFCApplication11Dlg::OnBnClickedButton10()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  SetDlgItemText(IDC_EDIT1, cs + _T("0"));
}

void CMFCApplication11Dlg::OnBnClickedButtonpoint()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs);
  if (cs.Find(_T(".")) == -1) {
    SetDlgItemText(IDC_EDIT1, cs + _T("."));
  }
  opt = 8;
  cs.Format(_T("%d"), num1);
}

void CMFCApplication11Dlg::OnBnClickedButton12()
{
  // TODO: 在此添加控件通知处理程序代码

  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs); opt = 6;
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

拿+ - * /为连续计算的运算符原来设置Ctime是想看运用了计算符几次，后来，又改变了想法，把它看作计算符的编号

void CMFCApplication11Dlg::OnBnClickedButtonadd()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs);//_tstoi(cs);
          //"+";
  if (Ctime == 0)  result = num1;
  //if (Ctime !=1&&Ctime!=2&&Ctime!=3&&Ctime!=4)   result = num1;
  else result += num1;
  num1 = result;
  result = num1;
  Ctime = 1; opt = 1;
  temp = temp + cs;
  temp += _T("+");
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtonsub()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);

  num1 = _ttof(cs);       //"-";
  if (num1 == 0) {
    num1 = 0.0; SetDlgItemText(IDC_EDIT1, _T(" "));
  }
  /*if (Ctime != 2)
  {
      result = num1;
  }*/
  else  result -= num1;
  num1 = result;

  Ctime = 2; opt = 2;
  result = num1;
  temp = temp + cs;
  temp += _T("-");
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtonmul()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs);//_tstoi(cs);   //"*";
  if (Ctime != 3)   result = num1;
  else result *= num1;
  num1 = result;
  Ctime = 3; opt = 3;
  temp = temp + cs;
  temp += _T("*");
  result = num1;
  SetDlgItemText(IDC_EDIT1, _T(" "));

}

void CMFCApplication11Dlg::OnBnClickedButtondiv()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs);       //"/";
  if (Ctime == 0)
    result = num1;
  else
  {
    if (num1 == 0) {
      result = num1;
      MessageBox(_T("输入无效！"));
    }
    else    result /= num1;
  }
  num1 = result;
  Ctime = 4; opt = 4;
  temp = temp + cs;
  temp += _T("/");
  result = num1;
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtonback()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  cs.Delete(cs.GetLength() - 1);
  SetDlgItemText(IDC_EDIT1, cs);
}

void CMFCApplication11Dlg::OnBnClickedButtonclear()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  num1 = 0.0; num2 = 0.0; result = 0.0;
  SetDlgItemText(IDC_EDIT1, _T(" "));
  temp = _T(" ");
  UpdateData(false);
}

void CMFCApplication11Dlg::OnBnClickedButtonjiecheng()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs); double  num = 1;
  for (int i = 1; i <= num1; i++)
    num *= i;
  num1 = num;
  opt = 5;
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtonsin()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs); double num;
  num1 = _ttof(cs); opt = 5; num = (num1*3.1415926) / 180; num1 = sin(num);
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtoncos()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs); double num;
  num1 = _ttof(cs); opt = 5; num = (num1*3.1415926) / 180; num1 = cos(num);
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButton30()//  %
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs); result = num1 / 100; opt = 5;
}

void CMFCApplication11Dlg::OnBnClickedButtonabout()
{
  // TODO: 在此添加控件通知处理程序代码
  CAboutDlg dlg;
  dlg.DoModal();
}

void CMFCApplication11Dlg::OnBnClickedButtonpinfang()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs); opt = 5;
  double f = pow(num1, 2);
  //如果浮点数其实是个整数,就显示为整数
  if (f - int(f) <= 1e-5)
  {
    cs.Format(L"%d", (int)f);
  }
  else
  {
    cs.Format(L"%f", f);
  }
  //SetDlgItemText(IDC_EDIT1, _T(" "));
  num1 = f;
  num2 = 0.0f;
}

oid CMFCApplication11Dlg::OnBnClickedButtonkaifang()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs); opt = 5;
  double f = sqrt(num1);
  //如果浮点数其实是个整数,就显示为整数
  if (f - int(f) <= 1e-5)
  {
    cs.Format(L"%d", (int)f);
  }
  else
  {
    cs.Format(L"%f", f);
  }
  //SetDlgItemText(IDC_EDIT1, _T(" "));
  num1 = f;
  num2 = 0.0f;
}

void CMFCApplication11Dlg::OnBnClickedButton26()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs);
  num1 = _ttof(cs); opt = 10;
  SetDlgItemText(IDC_EDIT1, _T(""));
}

void CMFCApplication11Dlg::OnBnClickedButtonlog()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs); double num;
  num1 = _ttof(cs); opt = 5;
  num = log10(num1); num1 = num;

  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtonln()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs); double num;
  num1 = _ttof(cs); opt = 5; num = log(num1); num1 = num;
  if (num1 < EPSINON) {
    SetDlgItemText(IDC_EDIT1, _T(" "));
    MessageBox(_T("输入无效！")); num1 = 0.0;
  }
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButton29()//e^n
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;
  GetDlgItemText(IDC_EDIT1, cs); double num;
  num1 = _ttof(cs); opt = 5; num = exp(num1); num1 = num;
  SetDlgItemText(IDC_EDIT1, _T(" "));
}

void CMFCApplication11Dlg::OnBnClickedButtonequal()
{
  // TODO: 在此添加控件通知处理程序代码
  CString cs;

  GetDlgItemText(IDC_EDIT1, cs);

  num2 = _ttof(cs);
  switch (opt)
  {

  case 1:result = result + num2; temp += cs; break;
  case 2:result = result - num2;  temp += cs; break;
  case 3:result = result * num2;  temp += cs; break;
  case 4:if (num2 == 0) {
    result = result;
    MessageBox(_T("输入无效！"));
  }
       else {
    result = result / num2;
  }
       temp += cs;
       break;
  case 5:result = num1;
    if (result < EPSINON) {
      MessageBox(_T("输入无效！"));
    }
    break;
  case 6: {
    double f = pow(num1, num2);
    //如果浮点数其实是个整数,就显示为整数
    if (f - int(f) <= 1e-5)
    {
      cs.Format(L"%d", (int)f);
    }
    else
    {
      cs.Format(L"%f", f);
    }
    //SetDlgItemText(IDC_EDIT1, _T(" "));
    num1 = f;
    num2 = 0.0f;
    result = num1;
  }     break;

  case 7:    break;
  case 8:
    result = num2;
  case 9:
    result = num1;
    break;
  case 10:
    result = pow(num1, 1 / num2);
  default:break;
  }
  num1 = result; num2 = 0;
  if (result - int(result) <= 1e-5)
  {
    cs.Format(L"=%d", (int)result);
  }
  else
  {
    cs.Format(_T(" = %f"), result);
  }
  temp += cs;
  SetDlgItemText(IDC_EDIT1, temp);

  num1 = 0.0;
  num2 = 0.0; result = 0.0; temp = _T(" ");
}