1231dlg.cpp

逆波兰式

// 1231Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "1231.h"
#include "1231Dlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
int ma1=0;
CString m,m1,po,l,p,l1,l2;
int n,i,y;
char a,q[2];
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
#define STACKSIZE   20
typedef struct{
	int *base,*top;
    int sizenum;
}SqStacknum;
typedef struct{
	char *base;
	char *top;
	int  sizeop;
}SqStackop;
void InitStack(SqStackop &s);
char GetTop(SqStackop s,char &e);
void Push(SqStackop &s,char e);
void Pop(SqStackop &s,char &e);
char Precede(char n1,char n2);
int Operate(int n1,char ch,int n2);
void EvaluateExpression();
char qian(char a1,char a2);
void four();
void Pop1(CString &s,char &e);
void Push1(CString &t,char e);

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()

/////////////////////////////////////////////////////////////////////////////
// CMy1231Dlg dialog

CMy1231Dlg::CMy1231Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMy1231Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMy1231Dlg)
	m_output1 = _T("");
	m_output2 = _T("");
	m_input1 = _T("");
	m_output3 = _T("");
	m_output4 = _T("");
	m_output5 = _T("");
	m_output6 = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMy1231Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMy1231Dlg)
	DDX_Text(pDX, IDC_EDIT2, m_output1);
	DDX_Text(pDX, IDC_EDIT3, m_output2);
	DDX_Text(pDX, IDC_EDIT1, m_input1);
	DDX_Text(pDX, IDC_EDIT4, m_output3);
	DDX_Text(pDX, IDC_EDIT5, m_output4);
	DDX_Text(pDX, IDC_EDIT6, m_output5);
	DDX_Text(pDX, IDC_EDIT7, m_output6);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMy1231Dlg, CDialog)
	//{{AFX_MSG_MAP(CMy1231Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_EN_CHANGE(IDC_EDIT1, OnChangeEdit1)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_BN_CLICKED(IDC_BUTTON3, OnButton3)
	ON_BN_CLICKED(IDC_BUTTON4, OnButton4)
	ON_BN_CLICKED(IDC_BUTTON5, OnButton5)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMy1231Dlg message handlers

BOOL CMy1231Dlg::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 CMy1231Dlg::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 CMy1231Dlg::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 CMy1231Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMy1231Dlg::OnChangeEdit1() 
{
	// TODO: If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.
	UpdateData(true);
	m1=m_input1;
    m=m1+'#';
	n=m.GetLength();
	// TODO: Add your control notification handler code here	
}
void InitStack(SqStackop &s)
{
	s.base=new char[STACKSIZE];
	s.top=s.base;
	s.sizeop=STACKSIZE;
}
char GetTop(SqStackop s,char &e)
{
	 if(s.top!=s.base)
	 return	 e=*(s.top-1);
	return(1);
}
void Push(SqStackop &s,char e)
{
	*s.top=e;
	s.top++;

}
void Pop(SqStackop &s,char &e)
{
	if(s.top!=s.base)
	{
	  e=*--s.top;
	}
}	 
char Precede(char x,char y)
{
	switch(x)
	{
	case '+':switch(y)
			 {
				case '+':return '>';break;
				case '-':return '>';break;
				case '*':return '<';break;
				case '^':return '<';break;
				case 'a':return '<';break;
				case '#':return '>';break;
				default: return 'w';break;
			 }break;
	case '-':switch(y)
			 {
				case 'a':return '<';break;
				case '+':return '>';break;
				case '-':return '>';break;
				case '*':return '<';break;
				case '^':return '<';break;
				case '#':return '>';break;
				default: return 'w';break;
			 }break;
	case '*':switch(y)
			 {
				case 'a':return '<';break;
				case '+':return '>';break;
				case '-':return '>';break;
				case '*':return '>';break;
				case '^':return '<';break;
				case '#':return '>';break;
				default: return 'w';break;
			 }break;
	case '^':switch(y)
			 {
				case '^':return '>';break;
				case '+':return '>';break;
				case '-':return '>';break;
				case '*':return '>';break;
				case '#':return '>';break;
				default: return 'w';break;
			 }break;
	case 'a':switch(y)
			 {
				case '+':return '>';break;
				case '-':return '>';break;
				case '*':return '>';break;
				case '^':return '>';break;
				case '#':return '>';break;
				default: return 'w';break;
			 }break;
	case '#':switch(y)
			 {
				case 'a':return '<';break;
				case '*':return '<';break;
				case '^':return '<';break;
				case '+':return '<';break;
				case '-':return '<';break;
				case '#':return '=';break;
				default: return 'w';break;	
			 }break;
	default: return 'w';break;
	}
}
 
void CMy1231Dlg::EvaluateExpression()
{
	SqStackop OPTR;
	InitStack(OPTR);
	Push(OPTR,'#');
	char e,c;
	int i=1;
	int mark=0;
	c=m.GetAt(0);
	if((n==2)&&(c=='a'))
	{
		po=po+m.GetAt(0)+"  "+"直接归约!\r\n";
	    y=i; itoa(y,q,10);	       m_output4+=q;
	       m_output4+="\r\n";
		l="恭喜你!\r\n符合文法!";
		ma1=1;
	}
	else if((n==2)&&(c!='a'))
	{
		l="对不起!\r\n不符合文法!";
	    y=i; itoa(y,q,10);	       m_output4+=q;
	       m_output4+="\r\n";
	}
	else if(n>2)
	{
		if(c!='a')
		{
           	y=i; itoa(y,q,10);
	       m_output4+=q;
	       m_output4+="\r\n";
			l="对不起!\r\n不符合文法!";
		}
		else if((c=='a')||(c=='^')||(c=='-')||c=='*'||c=='+'||c=='#')
		{
        	y=i;
            itoa(y,q,10);
	       m_output4+=q;
	       m_output4+="\r\n";
			po=po+m.GetAt(0)+"  "+"移进!\r\n";
			p=p+"< \r\n";
			Push(OPTR,c);
			while(i<=(n-1))
			{   
				if(mark==1)
					break;
				if(i==n-1&&GetTop(OPTR,e)!='a'&&GetTop(OPTR,e)!='^')
				{l="对不起!\r\n不符合文法!";break;}
				if(	GetTop(OPTR,e)=='S'&&i==n-1)
				{
					char r1;
					Pop(OPTR,r1);
					Pop(OPTR,r1);
					Pop(OPTR,r1);
					Push(OPTR,'S');
					break;
				}
				if(mark!=1)
				{