计算器ppt演示文稿.

1、杨柔杨柔YangRou付丽平付丽平FuLIPing刘计云刘计云LiuJiYun1 12 23 3姚婷姚婷YaoTing标题1标题2标题3 计算器的代码编程计算器的代码编程计算器的功能介绍计算器的界面设计1 12 23 31 12 2付丽萍功能介绍杨柔界面设计姚婷刘计云代码编程 引出一个数学类库头文件#include math.h#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE = _FILE_;#endif/预定义两个常数变量PI和e#define PI 3.1415926#define e 2.71

2、8281828459/定义字符串类型的两个变量a1与a2,主要用于对两次输入的数据进行缓存以便于进行计算CString a1,a2;/一个整数变量m，用于在函数Onequal中进行运算时进行运算符的选择int m=0;Set the icon for this dialog. The framework does this automaticallySet big iconSet small icon when the applications main window is not a dialog如果你添加一个尽量减少如果你添加一个尽量减少按钮到您的对话框，你将需按钮到您的对话框，你将需y代

3、码绘制图标。代码绘制图标。对对applicationsusing的的文档文档/视图模型，这是自动完成你的框架。视图模型，这是自动完成你的框架。The system calls this to obtain the cursor to display while the user dragsvoid CCalculatebDlg:OnPaint() if (IsIconic()CPaintDC dc(this); / device context for painting SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);/

4、Center icon in client rectangleint cxIcon = GetSystemMetrics(SM_CXICON);Contentwelcome to use these PowerPoint templates, New Content design, 10 years experienceint cyIcon = GetSystemMetrics(SM_CYICON);CRect rect;GetClientRect(&rect);int x = (rect.Width() - cxIcon + 1) / 2;int y = (rect.Height()

5、 - cyIcon + 1) / 2;/ Draw the icondc.DrawIcon(x, y, m_hIcon);elseCDialog:OnPaint();通过该操作可以把计算器内部通过通过该操作可以把计算器内部通过a1、a2缓存的值以缓存的值以及界面显示的值全部清空。及界面显示的值全部清空。void CCalculatebDlg:Once() / TODO: Add your control notification handler code hereUpdateData();/m_lecture = ;a1 = ;a2 = ;UpdateData(FALSE);void CCal

6、culatebDlg:Ondel()/ TODO: Add your control notification handler code hereUpdateData();int length =m_lecture.GetLength();/通过调用内部函数m_edit.GetLength()来获取显示其上的长度并将值赋给变流量length，length-;/把length值减一m_lecture = m_lecture.Left(length)/从左侧起获取length位的数据交给显示框显示UpdateData(FALSE);Content/加减乘除和求余加减乘除和求余void CCalcu

7、latebDlg:Ona() UpdateData();a1=m_lecture;m_lecture+=+;m=1;UpdateData(FALSE); void CCalculatebDlg:Onb() / TODO: Add your control notification handler code here UpdateData();a1=m_lecture;m_lecture+=-;m=2;UpdateData(FALSE); void CCalculatebDlg:Oncot() / TODO: Add your control notification handler code

8、hereUpdateData();a1=m_lecture;double num1=atof(a1);double num2=cos(PI/180*num1)/sin(PI/180*num1);m_lecture.Format(_T(%lf), num2);UpdateData(FALSE);void CCalculatebDlg:Onc() / TODO: Add your control notification handler code hereUpdateData();a1=m_lecture;m_lecture+=*;m=3;UpdateData(FALSE)void CCalcul

9、atebDlg:Onarcsin() / TODO: Add your control notification handler code herea1=m_lecture;double num1=atof(a1);double num2= asin (num1)*(180/PI);m_lecture.Format(_T(%lf), num2);UpdateData(FALSE);void CCalculatebDlg:Onarccos() / TODO: Add your control notification handler code herea1=m_lecture;double nu

10、m1=atof(a1);double num2= acos (num1)*(180/PI);m_lecture.Format(_T(%lf), num2);UpdateData(FALSE);void CCalculatebDlg:Onarctan() / TODO: Add your control notification handler code herea1=m_lecture;double num1=atof(a1);double num2= atan (num1)*(180/PI);m_lecture.Format(_T(%lf), num2);UpdateData(FALSE);

11、1 12 23 32 23 3123首先，将输入的值赋给编辑框，然后将a1转换成双精度的书num1231/首先把输入的数据传给r1,然后将r1由字符串型转换成双精度字符型num1/(First turn on the second input data to r1, then r1from the string type into double precision character type num1)/最后，三个或两个num1相乘即可/x3运算oid CCalculatebDlg:Onpow() / TODO: Add your control notification handler c

12、ode herea1=m_lecture;double num1=atof(a1);double num2= num1*num1;m_lecture.Format(_T(%lf), num2);UpdateData(FALSE);Contentvoid CCalculatebDlg:Ondaoshu() / TODO: Add your control notification handler code here a1=m_lecture;double num1=atof(a1); double num2= 1/num1 ; m_lecture.Format(_T(%lf), num2);Up

13、dateData(FALSE);Contentvoid CCalculatebDlg:Onjiecheng() / TODO: Add your control notification handler code hereUpdateData();a1=m_lecture;double n=atof(a1); doublej=1,num2=1; for(j=1;j=n;j+) num2=j*num2; m_lecture.Format(_T(%lf), num2);UpdateData(FALSE);Contentvoid CCalculatebDlg:Onsqrt() / TODO: Add your control notification handler code hereUpdateData