GPA成績換算器

GPA換算器，功能要點：

1.學生成績可以由文件導入。

2.GPA標準可以選擇，也可以手動導入。

3.GPA的計算過程易於監督控制。

4.計算的可讀性強。

主界面：

類視圖：

// GPADlg.h : 頭文件
//

#pragma once


// CGPADlg 對話框
class CGPADlg : public CDialogEx
{
// 構造
public:
	CGPADlg(CWnd* pParent = NULL);	// 標準構造函數

// 對話框數據
	enum { IDD = IDD_GPA_DIALOG };

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


// 實現
protected:
	HICON m_hIcon;

	// 生成的消息映射函數
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	DECLARE_MESSAGE_MAP()
public:
	CString m_sPathName;
	double m_dS1;
	double m_dS2;
	double m_dS3;
	double m_dS4;
	double m_dS5;
	double m_dS6;
	double m_dS7;
	double m_dO1;
	double m_dO2;
	double m_dO3;
	double m_dO4;
	double m_dO5;
	double m_dO6;
	double m_dO7;
	double m_dO8;
	CString m_strAverage;
	CString m_strGPA;
	CComboBox m_cmbStandard;
	double m_dTotal;
	CListBox m_ListScore;
	afx_msg void OnMenuitemman();
	afx_msg void OnMenuExit();
	afx_msg void OnAbout();
typedef struct stScore{
	double dOPoint;//原始分
	double dSPoint;//標準分
	double dNum;//學分
};
private:
	CArray<stScore,stScore&>arScore;
	double GetSDPoint(double dPoint);
	void SpliterString(CString str, double &a, double &b);
	void GatherData(void);
	void ChangeType(int nType);
	void SetEditRead(bool bReadOnly);
public:
	afx_msg void OnClickedButtonOpen();
	afx_msg void OnClickedButtonOk();
	afx_msg void OnSelchangeComboStandard();
};

// GPADlg.cpp : 實現文件
//

#include "stdafx.h"
#include "GPA.h"
#include "GPADlg.h"
#include "afxdialogex.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// 用於應用程序“關於”菜單項的 CAboutDlg 對話框

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

// 對話框數據
	enum { IDD = IDD_ABOUTBOX };

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

// 實現


};

CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}

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


// CGPADlg 對話框




CGPADlg::CGPADlg(CWnd* pParent /*=NULL*/)
	: CDialogEx(CGPADlg::IDD, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_sPathName = _T("");
	m_dS1 = 0.0;
	m_dS2 = 0.0;
	m_dS3 = 0.0;
	m_dS4 = 0.0;
	m_dS5 = 0.0;
	m_dS6 = 0.0;
	m_dS7 = 0.0;
	m_dO1 = 0.0;
	m_dO2 = 0.0;
	m_dO3 = 0.0;
	m_dO4 = 0.0;
	m_dO5 = 0.0;
	m_dO6 = 0.0;
	m_dO7 = 0.0;
	m_dO8 = 0.0;
	m_strAverage = _T("");
	m_strGPA = _T("");
	m_dTotal = 0.0;
}

void CGPADlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_EDIT_PATHNAME, m_sPathName);
	DDX_Text(pDX, IDC_EDIT_S1, m_dS1);
	DDX_Text(pDX, IDC_EDIT_S2, m_dS2);
	DDX_Text(pDX, IDC_EDIT_S3, m_dS3);
	DDX_Text(pDX, IDC_EDIT_S4, m_dS4);
	DDX_Text(pDX, IDC_EDIT_S5, m_dS5);
	DDX_Text(pDX, IDC_EDIT_S6, m_dS6);
	DDX_Text(pDX, IDC_EDIT_S7, m_dS7);
	DDX_Text(pDX, IDC_EDIT_O1, m_dO1);
	DDX_Text(pDX, IDC_EDIT_O2, m_dO2);
	DDX_Text(pDX, IDC_EDIT_O3, m_dO3);
	DDX_Text(pDX, IDC_EDIT_O4, m_dO4);
	DDX_Text(pDX, IDC_EDIT_O5, m_dO5);
	DDX_Text(pDX, IDC_EDIT_O6, m_dO6);
	DDX_Text(pDX, IDC_EDIT_O7, m_dO7);
	DDX_Text(pDX, IDC_EDIT_O8, m_dO8);
	DDX_Text(pDX, IDC_EDIT_AVERAGE, m_strAverage);
	DDX_Text(pDX, IDC_EDIT_GPA, m_strGPA);
	DDX_Control(pDX, IDC_COMBO_STANDARD, m_cmbStandard);
	DDX_Text(pDX, IDC_EDIT_TOTAL, m_dTotal);
	DDX_Control(pDX, IDC_LIST_SCORE, m_ListScore);
}

BEGIN_MESSAGE_MAP(CGPADlg, CDialogEx)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_COMMAND(ID_MENUITEMMAN, &CGPADlg::OnMenuitemman)
	ON_COMMAND(ID_menu_exit, &CGPADlg::OnMenuExit)
	ON_COMMAND(ID_ABOUT, &CGPADlg::OnAbout)
	ON_BN_CLICKED(IDC_BUTTON_OPEN, &CGPADlg::OnClickedButtonOpen)
	ON_BN_CLICKED(IDC_BUTTON_OK, &CGPADlg::OnClickedButtonOk)
	ON_CBN_SELCHANGE(IDC_COMBO_STANDARD, &CGPADlg::OnSelchangeComboStandard)
END_MESSAGE_MAP()


// CGPADlg 消息處理程序

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

	// 將“關於...”菜單項添加到系統菜單中。

	// IDM_ABOUTBOX 必須在系統命令範圍內。
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		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);
		}
	}

	// 設置此對話框的圖標。當應用程序主窗口不是對話框時，框架將自動
	//  執行此操作
	SetIcon(m_hIcon, TRUE);			// 設置大圖標
	SetIcon(m_hIcon, FALSE);		// 設置小圖標

	// TODO: 在此添加額外的初始化代碼

	
	m_cmbStandard.ResetContent();

	CString strTemp;   


	for(int i=0;i<4;i++)

	{
		if(i)
			strTemp.Format("%d",i);
		else
			strTemp = "無";

		m_cmbStandard.AddString(strTemp);

	}

	m_cmbStandard.SetCurSel(0);

	return TRUE;  // 除非將焦點設置到控件，否則返回 TRUE
}

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

// 如果向對話框添加最小化按鈕，則需要下面的代碼
//  來繪製該圖標。對於使用文檔/視圖模型的 MFC 應用程序，
//  這將由框架自動完成。

void CGPADlg::OnPaint()
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用於繪製的設備上下文

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

		// 使圖標在工作區矩形中居中
		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;

		// 繪製圖標
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialogEx::OnPaint();
	}
}

//當用戶拖動最小化窗口時系統調用此函數取得光標
//顯示。
HCURSOR CGPADlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}





void CGPADlg::OnMenuitemman()
{
	// TODO: 在此添加命令處理程序代碼
	WinExec("notepad.exe EXPLAIN.HEP",SW_SHOW);
}




void CGPADlg::OnMenuExit()
{
	// TODO: 在此添加命令處理程序代碼
	DestroyWindow();
}



void CGPADlg::OnAbout()
{
	// TODO: 在此添加命令處理程序代碼
	CAboutDlg dlg;
	dlg.DoModal();
}


double CGPADlg::GetSDPoint(double dPoint)
{
	UpdateData();
	CArray<double,double&>arOPoint;
	CArray<double,double&>arSPoint;
	arOPoint.Add(m_dO1);
	arOPoint.Add(m_dO2);
	arOPoint.Add(m_dO3);
	arOPoint.Add(m_dO4);
	arOPoint.Add(m_dO5);
	arOPoint.Add(m_dO6);
	arOPoint.Add(m_dO7);
	arOPoint.Add(m_dO8);

	arSPoint.Add(m_dS1);
	arSPoint.Add(m_dS2);
	arSPoint.Add(m_dS3);
	arSPoint.Add(m_dS4);
	arSPoint.Add(m_dS5);
	arSPoint.Add(m_dS6);
	arSPoint.Add(m_dS7);

	if(dPoint >= arOPoint[0])
		return arSPoint[0];
	for(int i = 0;i < arOPoint.GetSize();i++){
		if(dPoint >= arOPoint[i])
			return arSPoint[i-1];
	}
	return 0;
}


void CGPADlg::SpliterString(CString str, double &a, double &b)
{
	CString strOne, strTwo;
	int ifind;

	str.TrimLeft(' ');
	str.TrimRight(' ');
	
	ifind = str.Find(' ');
	strOne = str.Left(ifind);
	strTwo = str.Right(str.GetLength()-ifind-1);

	a = atof(LPCTSTR(_T(strOne)));
	b = atof(LPCTSTR(_T(strTwo)));

}


void CGPADlg::GatherData(void)
{
	CString str;
	stScore temp;

	if(m_sPathName == "")
		return;
	arScore.RemoveAll();
	CFile file(m_sPathName,CFile::modeRead);
	CArchive ar(&file,CArchive::load);

	ar.ReadString(str);
	while(str != ""){
		SpliterString(str,temp.dOPoint,temp.dNum);
		temp.dSPoint = GetSDPoint(temp.dOPoint);
		arScore.Add(temp);

		ar.ReadString(str);
	}
}


void CGPADlg::ChangeType(int nType)
{
	switch(nType){
	case 0:
	case 4:
		m_dS1 = m_dS2 = m_dS3 = m_dS4 = m_dS5 = m_dS6 = m_dS7 = 0;
		m_dO1 = m_dO2 = m_dO3 = m_dO4 = m_dO5 = m_dO6 = m_dO7 = m_dO8 = 0;

		break;
	case 1:
		m_dS1 = 4;
		m_dS2 = 3;
		m_dS3 = 2;
		m_dS4 = 1;
		m_dS5 = m_dS6 = m_dS7 = 0;
		m_dO1 = 100;
		m_dO2 = 90;
		m_dO3 = 80;
		m_dO4 = 70;
		m_dO5 = 60;
		m_dO6 = m_dO7 = m_dO8 = 0;
		break;
	case 2:
		m_dS1 = 4.3;
		m_dS2 = 4;
		m_dS3 = 3.7;
		m_dS4 = 3.3;
		m_dS5 = 3.0;
		m_dS6 = 2.7;
		m_dS7 = 2.3;
		m_dO1 = 100;
		m_dO2 = 90;
		m_dO3 = 85;
		m_dO4 = 80;
		m_dO5 = 75;
		m_dO6 = 70;
		m_dO7 = 65;
		m_dO8 = 60;
		break;
	case 3:
		m_dS1 = 4;
		m_dS2 = 3;
		m_dS3 = 2;
		m_dS4 = m_dS5 = m_dS6 = m_dS7 = 0;
		m_dO1 = 100;
		m_dO2 = 85;
		m_dO3 = 70;
		m_dO4 = 60;
		m_dO5 = m_dO6 = m_dO7 = m_dO8 = 0;
		break;
	}
}


void CGPADlg::SetEditRead(bool bReadOnly)
{
	((CEdit *)GetDlgItem(IDC_EDIT_S1))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_S2))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_S3))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_S4))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_S5))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_S6))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_S7))->SetReadOnly(bReadOnly);

	((CEdit *)GetDlgItem(IDC_EDIT_O1))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O2))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O3))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O4))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O5))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O6))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O7))->SetReadOnly(bReadOnly);
	((CEdit *)GetDlgItem(IDC_EDIT_O8))->SetReadOnly(bReadOnly);

}


void CGPADlg::OnClickedButtonOpen()
{
	// TODO: 在此添加控件通知處理程序代碼
	CFileDialog fdlg(TRUE,NULL,NULL,OFN_OVERWRITEPROMPT,"成績文件|*.dat;*.txt|",NULL);
	if(fdlg.DoModal() == IDOK){
		m_sPathName = fdlg.GetPathName();
	}
	UpdateData(FALSE);
}


void CGPADlg::OnClickedButtonOk()
{
	// TODO: 在此添加控件通知處理程序代碼

	double dGPAall = 0;
	double dAvgall = 0;
	GatherData();
	int i = 0;
	int size = arScore.GetSize();
	if(size == 0){
		return;
	}
	m_ListScore.ResetContent();
	m_ListScore.AddString("序號      成績      學分      標準");
	m_ListScore.AddString("-----------------------------------------");

	m_dTotal = 0;
	while(i<size){
		CString str;
		m_dTotal += arScore.GetAt(i).dNum;
		dGPAall += arScore.GetAt(i).dSPoint*arScore.GetAt(i).dNum;
		dAvgall += arScore.GetAt(i).dOPoint*arScore.GetAt(i).dNum;
		str.Format("%d       %0.2f      %0.2f     %0.2f",i+1,
												arScore.GetAt(i).dOPoint,
												arScore.GetAt(i).dNum,
												arScore.GetAt(i).dSPoint);
		i++;
		m_ListScore.AddString(str);
	}
	m_strGPA.Format("%.2f",dGPAall/m_dTotal);
	m_strAverage.Format("%.2f",dAvgall/m_dTotal);

	UpdateData(FALSE);
}


void CGPADlg::OnSelchangeComboStandard()
{
	// TODO: 在此添加控件通知處理程序代碼
	int nIndex = m_cmbStandard.GetCurSel();
	if(4 == nIndex)
		SetEditRead(false);
	else
		SetEditRead(true);
	ChangeType(nIndex);
	UpdateData(FALSE);
}

運行界面：