cacl2dlg.cpp

计算器源码（C++编写的。其中难免欠妥。希望大家多多指教）

// Cacl2Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "Cacl2.h"
#include "Cacl2Dlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CCacl2Dlg dialog

CCacl2Dlg::CCacl2Dlg (CWnd* pParent /*=NULL*/): CDialog(CCacl2Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCacl2Dlg)
	m_x = 0.0;
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_first=0.0;m_second=0.0;	//该行以下为初始化
	m_firstz=0;m_firstx=0.0;
	m_secondz=0;m_secondx=0.0;
	m_firx=FALSE;m_secx=FALSE;
	m_firxw=0;m_secxw=0;
	m_firzorf=1;m_seczorf=1;
	m_EnterSec=FALSE;	
	m_result=0.0;
	m_ForS=1;
	m_mfir=0.0;m_msec=0.0;m_mfun=0;
	m_sfmf=FALSE;m_sfms=FALSE;m_sfmfun=FALSE;
	

}

void CCacl2Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCacl2Dlg)
	DDX_Control(pDX, IDC_RESULT, m_xedit);
	DDX_Text(pDX, IDC_RESULT, m_x);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCacl2Dlg, CDialog)
	//{{AFX_MSG_MAP(CCacl2Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_0, On0)
	ON_BN_CLICKED(IDC_1, On1)
	ON_BN_CLICKED(IDC_2, On2)
	ON_BN_CLICKED(IDC_3, On3)
	ON_BN_CLICKED(IDC_4, On4)
	ON_BN_CLICKED(IDC_5, On5)
	ON_BN_CLICKED(IDC_6, On6)
	ON_BN_CLICKED(IDC_7, On7)
	ON_BN_CLICKED(IDC_8, On8)
	ON_BN_CLICKED(IDC_9, On9)
	ON_BN_CLICKED(IDC_ADD, OnAdd)
	ON_BN_CLICKED(IDC_BACK, OnBack)
	ON_BN_CLICKED(IDC_DIV, OnDiv)
	ON_BN_CLICKED(IDC_GO, OnGo)
	ON_BN_CLICKED(IDC_ON, OnOn)
	ON_BN_CLICKED(IDC_SUB, OnSub)
	ON_BN_CLICKED(IDC_TIM, OnTim)
	ON_BN_CLICKED(IDC_XSD, OnXsd)
	ON_BN_CLICKED(IDC_ZFH, OnZfh)
	ON_BN_CLICKED(IDC_ABTATH, OnAbtath)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCacl2Dlg message handlers



void CCacl2Dlg::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 CCacl2Dlg::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 CCacl2Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCacl2Dlg::On0()	//输入0
{
	// TODO: Add your control notification handler code here
	AddNum(0);
}

void CCacl2Dlg::On1()	//输入1
{
	// TODO: Add your control notification handler code here
	AddNum(1);
	
}

void CCacl2Dlg::On2()	//输入2
{
	// TODO: Add your control notification handler code here
	AddNum(2);
	
}

void CCacl2Dlg::On3()	//输入3
{
	// TODO: Add your control notification handler code here
	AddNum(3);
	
}

void CCacl2Dlg::On4()	//输入4
{
	// TODO: Add your control notification handler code here
	AddNum(4);
}

void CCacl2Dlg::On5()	//输入5
{
	// TODO: Add your control notification handler code here
	AddNum(5);
}

void CCacl2Dlg::On6()	//输入6
{
	// TODO: Add your control notification handler code here
	AddNum(6);
}

void CCacl2Dlg::On7()	//输入7
{
	// TODO: Add your control notification handler code here
	AddNum(7);
	
}

void CCacl2Dlg::On8()	//输入8
{
	// TODO: Add your control notification handler code here
	AddNum(8);
}

void CCacl2Dlg::On9()	//输入9
{
	// TODO: Add your control notification handler code here
	AddNum(9);
}

void CCacl2Dlg::OnAdd()		//输入+
{
	// TODO: Add your control notification handler code here
	AddFun(1);
	
}

void CCacl2Dlg::OnBack()	//按back键
{
	// TODO: Add your control notification handler code here
	if(m_ForS==1)			//如果此时在输入第一个数
	{
		if(m_firx==FALSE)	//如果此时在输入整数部分
		{	if(m_firstz<10)	//如果整数部分小于10
			{
				m_firstz=0;	//改为0
				m_firzorf=1; //置符号为正
			}
			else
			{
				int y1=(int)m_firstz;//y1为一与整数部分相等的数
				y1/=10;			//去掉个位数	
				m_firstz=y1;
			}
		}
		else					//如果在输入小数部分
		{
			if(m_firxw==1)	//此时小数部分只有一位
			{
				m_firstx=0.0;m_firxw=0;m_firx=FALSE;//小数部分清为0
			}
			else
			{
				int y2=(int)(m_firstx*pow(10,m_firxw));	//取一整数与小数点所有的数表示的整数相等，如123等于0.123的小数部分表示的数
				y2/=10;m_firxw--;			//去掉最后一位
				m_firstx=y2*pow(10,(-1)*m_firxw);
			}
		}
		m_first=m_firzorf*(m_firstz+m_firstx);	//计算出第一个数
		m_x=m_first;UpdateData(FALSE);			//显示它
	}
	else if(m_ForS==2)		//如果在输入第二个数,处理方法同第一个数
	{
		if(m_secx==FALSE)
		{	
			if(m_secondz<10)
			{
				m_secondz=0;
				m_seczorf=1;
			}
			else
			{
				int y3=(int)m_secondz;
				y3/=10;
				m_secondz=y3;
			}
		}
		else
		{
			if(m_secxw==1)
			{
				m_secondx=0.0;m_secxw=0;m_secx=FALSE;
			}
			else
			{
				int y4=(int)(m_secondx*pow(10,m_secxw));
				y4/=10;m_secxw--;
				m_secondx=y4*pow(10,(-1)*m_secxw);
			}
		}
		m_second=m_seczorf*(m_secondz+m_secondx);
		m_x=m_second;UpdateData(FALSE);
	}
	
}

void CCacl2Dlg::OnDiv()		//输入/
{
	// TODO: Add your control notification handler code here
	AddFun(4);
}

void CCacl2Dlg::OnGo()	//按=号运算
{
	// TODO: Add your control notification handler code here
	if(m_sfmf==TRUE&&m_sfms==TRUE&&m_sfmfun==TRUE)	//如果记着第一,二个数和运算符,即上次算完后未输入数,而再次按=
	{	
		if(m_mfun==1)m_result=m_mfir+m_msec;	//m_fun为1,则用上次的数和符号加,下同
		else if(m_mfun==2)m_result=m_mfir-m_msec;	//m_fun为2,则减,下同
		else if(m_mfun==3)m_result=m_mfir*m_msec;	//为3,则乘,下同
		else if(m_mfun==4)m_result=m_mfir/m_msec;	//为4,则除,下同
		m_sfmf=TRUE;m_sfms=TRUE;m_sfmfun=TRUE;	//记住参加运算的数和运算符
		m_mfir=m_result;m_msec=m_msec;m_mfun=m_mfun;
	}
	
	else if(m_sfmf==TRUE&&m_sfms==FALSE&&m_sfmfun==FALSE)//只记的第一数,如算完2+3=5后按*4=
	{
		if(m_fun==1)m_result=m_mfir+m_second;
		else if(m_fun==2)m_result=m_mfir-m_second;
		else if(m_fun==3)m_result=m_mfir*m_second;
		else if(m_fun==4)m_result=m_mfir/m_second;
		m_sfmf=TRUE;m_sfms=TRUE;m_sfmfun=TRUE;
		m_mfir=m_result;m_msec=m_second;m_mfun=m_fun;
	}
	else if(m_sfmf=TRUE&&m_sfms==TRUE&&m_sfmfun==FALSE)	//记住了第一个数,未输入第二个数,输入了运算符.如算完2+3=5后按*=结果为5*5=25;
	{
		m_second=m_mfir;
		if(m_fun==1)m_result=m_mfir+m_second;
		else if(m_fun==2)m_result=m_mfir-m_second;
		else if(m_fun==3)m_result=m_mfir*m_second;
		else if(m_fun==4)m_result=m_mfir/m_second;
		m_sfmf=TRUE;m_sfms=TRUE;m_sfmfun=TRUE;
		m_mfir=m_result;m_msec=m_second;m_mfun=m_fun;
	}
	
	else if(m_sfmf==FALSE&&m_sfms==FALSE&&m_sfmfun==FALSE)//第一二个数和运算符都不记的,记全重新输入,如算完2+3=5后输入4*6=	
	{		
		if(m_EnterSec==FALSE)m_second=m_first;
		if(m_fun==1)m_result=m_first+m_second;
		else if(m_fun==2)m_result=m_first-m_second;
		else if(m_fun==3)m_result=m_first*m_second;
		else if(m_fun==4)m_result=m_first/m_second;
		m_sfmf=TRUE;m_sfms=TRUE;m_sfmfun=TRUE;
		m_mfir=m_result;m_msec=m_second;m_mfun=m_fun;
	}
	m_x=m_result;
	UpdateData(FALSE);		//显示结果
	m_first=0;m_second=0.0;	
	m_firstz=0;m_firstx=0.0;
	m_secondz=0;m_secondx=0.0;
	m_firx=FALSE;m_secx=FALSE;
	m_firxw=0;m_secxw=0;
	m_firzorf=1;m_seczorf=1;
	m_ForS=1;
	m_EnterSec=FALSE;	
}

void CCacl2Dlg::OnOn()	//按on键
{
	// TODO: Add your control notification handler code here
	m_x=0.0;			//恢复默认值,下同
	m_first=0.0;m_second=0.0;
	m_firstz=0;m_firstx=0.0;
	m_secondz=0;m_secondx=0.0;
	m_firx=FALSE;m_secx=FALSE;
	m_firxw=0;m_secxw=0;
	m_firzorf=1;m_seczorf=1;
	m_ForS=1;
	m_mfir=0.0;m_msec=0.0;
	m_mfun=0;
	m_sfmf=FALSE;m_sfms=FALSE;m_sfmfun=FALSE;
	m_EnterSec=FALSE;	
	UpdateData(FALSE);
	
}

void CCacl2Dlg::OnSub()		//输入-
{
	// TODO: Add your control notification handler code here
	AddFun(2);	
}

void CCacl2Dlg::OnTim()		//输入*
{
	// TODO: Add your control notification handler code here
	AddFun(3);
}

void CCacl2Dlg::OnXsd()		//按小数点.
{
	// TODO: Add your control notification handler code here
	if(m_ForS==1)m_firx=TRUE;	//此时在输入第一个数,第一个数指示十是否该输入小数部分变量置为真
	else if(m_ForS==2)m_secx=TRUE;	//在输入第二个数
}

void CCacl2Dlg::OnZfh()		//按+/-键
{
	// TODO: Add your control notification handler code here
	if(m_ForS==1)			//此时在输入第一个数
	{
		m_firzorf=-1;		//指示符置为-1
		m_first*=-1;
		m_x=m_first;
		UpdateData(FALSE);
	}
	
	else 
	{
		m_seczorf=-1;
		m_second*=-1;
		m_x=m_second;
		UpdateData(FALSE);
	}
}

void CCacl2Dlg::AddNum(int i)		//输入数字是时的处理函数
{	
	if(m_ForS==1)
	{
		if(m_firx==FALSE)			//整数数部分
		{
			m_firstz*=10;m_firstz+=i;		
		}
		else						//小数部分
		{  
			m_firxw++;m_firstx+=pow(10,(-1)*m_firxw)*i;
		}
		m_first=m_firzorf*(m_firstz+m_firstx);
		m_x=m_first; m_sfmf=FALSE;m_mfir=0;
		UpdateData(FALSE);
	}
	else if(m_ForS==2)			//第二个数,处理同第一个数
	{	
		m_EnterSec=TRUE;		//将指示是否输入第二个数的变量置为真
		if(m_secx==FALSE)
		{
			m_secondz*=10;m_secondz+=i;
		}
		else 
		{
			m_secxw++;m_secondx+=pow(10,(-1)*m_secxw)*i;
		}
		m_second=m_seczorf*(m_secondz+m_secondx);
		m_sfms=FALSE;m_msec=0;
		m_x=m_second;
		UpdateData(FALSE);
	}	
}

void CCacl2Dlg::AddFun(int j)	//输入运算符时的处理函数
{	
	if(m_sfmf==TRUE&&m_sfmfun==FALSE&&m_EnterSec==TRUE)
	{	if(m_fun==1)m_result=m_mfir+m_second;
		else if(m_fun==2)m_result=m_mfir-m_second;
		else if(m_fun==3)m_result=m_mfir*m_second;
		else if(m_fun==4)m_result=m_mfir/m_second;
		m_x=m_result;m_sfmf=TRUE;m_mfir=m_result;
		UpdateData(FALSE);		m_EnterSec=FALSE;
		m_firstz=0;m_firstx=0;m_firxw=0;m_firzorf=1;
		m_second=0;m_secondz=0;m_secondx=0;m_secxw=0;
		m_ForS=2;m_seczorf=1;
		if(j==1)m_fun=1;
		else if(j==2)m_fun=2;
		else if(j==3)m_fun=3;
		else if(j==4)m_fun=4;		
	}	
	else if(m_sfmf==FALSE&&m_sfmfun==FALSE&&m_EnterSec==TRUE)	//如果此时第二个数存在.则运算,例如输入2+3后按*键
	{ 
		if(m_fun==1)     m_result=m_first+m_second;
		else if(m_fun==2)m_result=m_first-m_second;
		else if(m_fun==3)m_result=m_first*m_second;
		else if(m_fun==4)m_result=m_first/m_second;
		m_x=m_result;m_first=m_result;
		UpdateData(FALSE);	m_EnterSec=FALSE;
		m_sfmf=TRUE;m_mfir=m_result;
		m_firstz=0;m_firstx=0;m_firxw=0;m_firzorf=1;
		m_second=0;m_secondz=0;m_secondx=0;m_secxw=0;
		m_ForS=2;m_seczorf=1;
		if(j==1)m_fun=1;
		else if(j==2)m_fun=2;
		else if(j==3)m_fun=3;
		else if(j==4)m_fun=4;			
	}
	else   
	{
		if(j==1)m_fun=1;
		else if(j==2)m_fun=2;
		else if(j==3)m_fun=3;
		else if(j==4)m_fun=4;
		m_ForS=2;
		m_x=0;
		UpdateData(FALSE);
	}
	m_mfun=0;m_sfmfun=FALSE;
}


void CCacl2Dlg::OnAbtath() 
{
	// TODO: Add your control notification handler code here
	MessageBox("作者:石永刚,email:[e-mail]");
}