分类:
项目实践(3)
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普通计算模块:(运行效果图参见计算器项目综述)
该模块开发文档截图
这一模块是该项目的核心。考虑核心代码的实现:由于运算符只有这六种(+、-、*、/、平方、开方)所以就可以将表达式中的运算符存在一个char数组中,然后先对该数组中平方和开方这两个一元运算符进行处理,这样表达式中就只剩下另外四种运算符了。而这四种运算符只有两个优先级,利用堆栈很容易实现。遇到+、-就将数字(或其相反数)push(),遇到*、/就进行pop(),这样最后将栈中的数字加和即可。
该模块完整代码如下:
- // 简化调试Dlg.cpp : implementation file
- //
- #include "stdafx.h"
- #include "简化调试.h"
- #include "简化调试Dlg.h"
- #include "cmath"
- #include "stack"
- #include "MyDlg_1.h"
- #include "MyDlg_2.h"
- #include "MyDlg_3.h"
- using namespace std;
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- CString m_num("");
- CString m_sig("");
- double xiaoshu,jieguo,answer;
- int zhengshu,index;
- int i,j,num_lenth=0;
- double num[50];
- stack <double> result;
- /////////////////////////////////////////////////////////////////////////////
- // CAboutDlg dialog used for App About
- class CAboutDlg : public CDialog
- {
- public:
- CAboutDlg();
- // Dialog Data
- //{{AFX_DATA(CAboutDlg)
- enum { IDD = IDD_ABOUTBOX };
- //}}AFX_DATA
- // ClassWizard generated virtual function overrides
- //{{AFX_VIRTUAL(CAboutDlg)
- protected:
- virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
- //}}AFX_VIRTUAL
- // Implementation
- protected:
- //{{AFX_MSG(CAboutDlg)
- //}}AFX_MSG
- DECLARE_MESSAGE_MAP()
- };
- CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
- {
- //{{AFX_DATA_INIT(CAboutDlg)
- //}}AFX_DATA_INIT
- }
- void CAboutDlg::DoDataExchange(CDataExchange* pDX)
- {
- CDialog::DoDataExchange(pDX);
- //{{AFX_DATA_MAP(CAboutDlg)
- //}}AFX_DATA_MAP
- }
- BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
- //{{AFX_MSG_MAP(CAboutDlg)
- // No message handlers
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CMyDlg dialog
- CMyDlg::CMyDlg(CWnd* pParent /*=NULL*/)
- : CDialog(CMyDlg::IDD, pParent)
- {
- //{{AFX_DATA_INIT(CMyDlg)
- m_str = _T("");
- //}}AFX_DATA_INIT
- // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
- m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
- }
- void CMyDlg::DoDataExchange(CDataExchange* pDX)
- {
- CDialog::DoDataExchange(pDX);
- //{{AFX_DATA_MAP(CMyDlg)
- DDX_Text(pDX, IDC_EDIT1, m_str);
- //}}AFX_DATA_MAP
- }
- BEGIN_MESSAGE_MAP(CMyDlg, CDialog)
- //{{AFX_MSG_MAP(CMyDlg)
- ON_WM_SYSCOMMAND()
- ON_WM_PAINT()
- ON_WM_QUERYDRAGICON()
- ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
- ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
- ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
- ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
- ON_BN_CLICKED(IDC_BUTTON5, OnButton5)
- ON_BN_CLICKED(IDC_BUTTON10, OnButton10)
- ON_BN_CLICKED(IDC_BUTTON11, OnButton11)
- ON_BN_CLICKED(IDC_BUTTON12, OnButton12)
- ON_BN_CLICKED(IDC_BUTTON13, OnButton13)
- ON_BN_CLICKED(IDC_BUTTON14, OnButton14)
- ON_BN_CLICKED(IDC_BUTTON6, OnButton6)
- ON_BN_CLICKED(IDC_BUTTON7, OnButton7)
- ON_BN_CLICKED(IDC_BUTTON8, OnButton8)
- ON_BN_CLICKED(IDC_BUTTON9, OnButton9)
- ON_BN_CLICKED(IDC_BUTTON0, OnButton0)
- ON_BN_CLICKED(IDC_BUTTON15, OnButton15)
- ON_BN_CLICKED(IDC_BUTTON16, OnButton16)
- ON_BN_CLICKED(IDC_BUTTON17, OnButton17)
- ON_BN_CLICKED(IDC_BUTTON18, OnButton18)
- ON_BN_CLICKED(IDC_BUTTON19, OnButton19)
- ON_COMMAND(ID_MENUITEM0, OnMenuitem0)
- ON_COMMAND(ID_MENUITEM1, OnMenuitem1)
- ON_COMMAND(ID_MENUITEM2, OnMenuitem2)
- ON_COMMAND(ID_MENUITEM3, OnMenuitem3)
- //}}AFX_MSG_MAP
- END_MESSAGE_MAP()
- /////////////////////////////////////////////////////////////////////////////
- // CMyDlg message handlers
- BOOL CMyDlg::OnInitDialog()
- {
- CDialog::OnInitDialog();
- // Add "About..." menu item to system menu.
- // IDM_ABOUTBOX must be in the system command range.
- ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
- ASSERT(IDM_ABOUTBOX < 0xF000);
- CMenu* pSysMenu = GetSystemMenu(FALSE);
- if (pSysMenu != NULL)
- {
- CString strAboutMenu;
- strAboutMenu.LoadString(IDS_ABOUTBOX);
- if (!strAboutMenu.IsEmpty())
- {
- pSysMenu->AppendMenu(MF_SEPARATOR);
- pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
- }
- }
- // Set the icon for this dialog. The framework does this automatically
- // when the application's main window is not a dialog
- SetIcon(m_hIcon, TRUE); // Set big icon
- SetIcon(m_hIcon, FALSE); // Set small icon
- // TODO: Add extra initialization here
- return TRUE; // return TRUE unless you set the focus to a control
- }
- void CMyDlg::OnSysCommand(UINT nID, LPARAM lParam)
- {
- if ((nID & 0xFFF0) == IDM_ABOUTBOX)
- {
- CAboutDlg dlgAbout;
- dlgAbout.DoModal();
- }
- else
- {
- CDialog::OnSysCommand(nID, lParam);
- }
- }
- // If you add a minimize button to your dialog, you will need the code below
- // to draw the icon. For MFC applications using the document/view model,
- // this is automatically done for you by the framework.
- void CMyDlg::OnPaint()
- {
- if (IsIconic())
- {
- CPaintDC dc(this); // device context for painting
- SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
- // Center icon in client rectangle
- 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;
- // Draw the icon
- dc.DrawIcon(x, y, m_hIcon);
- }
- else
- {
- CDialog::OnPaint();
- }
- }
- // The system calls this to obtain the cursor to display while the user drags
- // the minimized window.
- HCURSOR CMyDlg::OnQueryDragIcon()
- {
- return (HCURSOR) m_hIcon;
- }
- void CMyDlg::OnButton1()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "1";
- m_str = m_str + "1";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton2()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "2";
- m_str = m_str + "2";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton3()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "3";
- m_str = m_str + "3";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton4()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "4";
- m_str = m_str + "4";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton5()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "5";
- m_str = m_str + "5";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton10()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_str = m_str + "+";
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- m_sig = m_sig + "+";
- UpdateData(FALSE);
- m_num = "";
- }
- void CMyDlg::OnButton11()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_str = m_str + "-";
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- m_sig = m_sig + "-";
- UpdateData(FALSE);
- m_num = "";
- }
- void CMyDlg::OnButton12()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_str = m_str + "×";
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- m_sig = m_sig + "*";
- UpdateData(FALSE);
- m_num = "";
- }
- void CMyDlg::OnButton13()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_str = m_str + "÷";
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- m_sig = m_sig + "/";
- UpdateData(FALSE);
- m_num = "";
- }
- void CMyDlg::OnButton14()
- {
- // TODO: Add your control notification handler code here
- UpdateData(TRUE);
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- answer = 0;
- char csig[50];
- strncpy(csig,m_sig,sizeof(csig));
- for(i = 0;i < strlen(csig);i++)
- {
- if(csig[i] == '#' || csig[i] == '@')
- {
- if(csig[i] == '#')
- num[i] = num[i] * num[i];
- else
- num[i] = sqrt(num[i]);
- for(j = i;j<strlen(csig)-1;j++)
- csig[j] = csig[j+1];
- csig[strlen(csig)-1] = '\0';
- }
- }
- result.push(num[0]);
- int m =-1;
- double b;
- while(1)
- {
- m++;
- if(csig[m] != '+' && csig[m] != '-' && csig[m] != '*' && csig[m] != '/')
- break;
- if(csig[m]=='+'||csig[m]=='-')
- {
- if(csig[m]=='+') result.push(num[m+1]);
- else result.push(-num[m+1]);
- }
- else
- {
- b=result.top();
- result.pop();
- if(csig[m]=='*') result.push(b*num[m+1]);
- else
- {
- if(num[m+1]==0)
- {
- MessageBox("除以0,你是逗比吗?!\n重新计算吧。");
- return ;
- }
- result.push(b/num[m+1]);
- }
- }
- }
- while(!result.empty())
- {
- answer+=result.top();
- result.pop();
- }
- m_str.Format("%f", answer);
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton16()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_str = m_str + "^2";
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- m_sig = m_sig + "#";
- UpdateData(FALSE);
- m_num = "";
- }
- void CMyDlg::OnButton6()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "6";
- m_str = m_str + "6";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton7()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "7";
- m_str = m_str + "7";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton8()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "8";
- m_str = m_str + "8";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton9()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "9";
- m_str = m_str + "9";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton0()
- {
- // TODO: Add your control notification handler code here
- m_num = m_num + "0";
- m_str = m_str + "0";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton15()
- {
- // TODO: Add your control notification handler code here
- if(m_num.GetAt(m_num.GetLength()-1)=='.')
- return ;
- m_num = m_num + ".";
- m_str = m_str + ".";
- UpdateData(FALSE);
- }
- void CMyDlg::OnButton17()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_str = m_str + "^0.5";
- zhengshu = 0;
- xiaoshu =0.0;
- index = 1;
- char cnum[50];
- strncpy(cnum,m_num,sizeof(cnum));
- for(i = 0;i < strlen(cnum);i++)
- {
- if(cnum[i] != '.')
- zhengshu = zhengshu * 10 + (cnum[i] - '0');
- else
- {
- for(j = i+1;j < strlen(cnum);j++,index++)
- {
- xiaoshu += (cnum[j] - '0') / pow(10,index);
- }
- break;
- }
- }
- jieguo = zhengshu + xiaoshu;
- num[num_lenth++] = jieguo;
- m_sig = m_sig + "@";
- UpdateData(FALSE);
- m_num = "";
- }
- void CMyDlg::OnButton18()
- {
- // TODO: Add your control notification handler code here
- MessageBox("1.该计算器可以进行混合运算\n\n2.每次重新计算之前请按CE","温馨提示");
- }
- void CMyDlg::OnButton19()
- {
- // TODO: Add your control notification handler code here
- UpdateData();
- m_num = "";
- m_sig = "";
- num_lenth = 0;
- m_str = "";
- UpdateData(FALSE);
- }
- void CMyDlg::OnMenuitem1()
- {
- // TODO: Add your command handler code here
- CMyDlg::OnCancel();
- CMyDlg_1 dlg;
- dlg.DoModal();
- }
- void CMyDlg::OnMenuitem2()
- {
- // TODO: Add your command handler code here
- CMyDlg::OnCancel();
- CMyDlg_2 dlg;
- dlg.DoModal();
- }
- void CMyDlg::OnMenuitem0()
- {
- // TODO: Add your command handler code here
- MessageBox("您已处于普通计算模式!");
- }
- void CMyDlg::OnMenuitem3()
- {
- // TODO: Add your command handler code here
- CMyDlg::OnCancel();
- CMyDlg_3 dlg;
- dlg.DoModal();
- }