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标题: C＋＋的计算器怎么做 [打印本页]

作者: 惠儿雨点 时间: 2009-11-4 00:49
标题: C＋＋的计算器怎么做
C＋＋的计算器怎么做，那位大哥帮帮忙啊！

作者: 魅力ぉ小猪ぎ 时间: 2009-11-4 00:49
windwows api 写的....如果用c++写呢, 数据结构上都有描述
HEXCALC.C

/*------------------------------------------------------------------------

HEXCALC.C -- Hexadecimal Calculator

(c) Charles Petzold, 1998

-------------------------------------------------------------------------*/

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,

PSTR szCmdLine, int iCmdShow)

{

static TCHAR szAppName[] = TEXT ("HexCalc") ;

HWND hwnd ;

MSG msg ;

WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW;

wndclass.lpfnWndProc = WndProc ;

wndclass.cbClsExtra = 0 ;

wndclass.cbWndExtra = DLGWINDOWEXTRA ; // Note!

wndclass.hInstance = hInstance ;

wndclass.hIcon = LoadIcon (hInstance, szAppName) ;

wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;

wndclass.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1) ;

wndclass.lpszMenuName = NULL ;

wndclass.lpszClassName = szAppName ;

if (!RegisterClass (&wndclass))

{

MessageBox ( NULL, TEXT ("This program requires Windows NT!"),

szAppName, MB_ICONERROR) ;

return 0 ;

}

hwnd = CreateDialog (hInstance, szAppName, 0, NULL) ;

ShowWindow (hwnd, iCmdShow) ;

while (GetMessage (&msg, NULL, 0, 0))

{

TranslateMessage (&msg) ;

DispatchMessage (&msg) ;

}

return msg.wParam ;

}

void ShowNumber (HWND hwnd, UINT iNumber)

{

TCHAR szBuffer[20] ;

wsprintf (szBuffer, TEXT ("%X"), iNumber) ;

SetDlgItemText (hwnd, VK_ESCAPE, szBuffer) ;

}

DWORD CalcIt (UINT iFirstNum, int iOperation, UINT iNum)

{

switch (iOperation)

{

case '=': return iNum ;

case '+': return iFirstNum + iNum ;

case '-': return iFirstNum - iNum ;

case '*': return iFirstNum * iNum ;

case '&': return iFirstNum & iNum ;

case '|': return iFirstNum | iNum ;

case '^': return iFirstNum ^ iNum ;

case '<': return iFirstNum << iNum ;

case '>': return iFirstNum >> iNum ;

case '/': return iNum ? iFirstNum / iNum: MAXDWORD ;

case '%': return iNum ? iFirstNum % iNum: MAXDWORD ;

default : return 0 ;

}

}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)

{

static BOOL bNewNumber = TRUE ;

static int iOperation = '=' ;

static UINT iNumber, iFirstNum ;

HWND hButton ;

switch (message)

{

case WM_KEYDOWN: // left arrow --> backspace

if (wParam != VK_LEFT)

break ;

wParam = VK_BACK ;

// fall through

case WM_CHAR:

if ((wParam = (WPARAM) CharUpper ((TCHAR *) wParam)) == VK_RETURN)

wParam = '=' ;

if (hButton = GetDlgItem (hwnd, wParam))

{

SendMessage (hButton, BM_SETSTATE, 1, 0) ;

Sleep (100) ;

SendMessage (hButton, BM_SETSTATE, 0, 0) ;

}

else

{

MessageBeep (0) ;

break ;

}

// fall through

case WM_COMMAND:

SetFocus (hwnd) ;

if (LOWORD (wParam) == VK_BACK) //backspace

ShowNumber (hwnd, iNumber /= 16) ;

else if (LOWORD (wParam) == VK_ESCAPE) // escape

ShowNumber (hwnd, iNumber = 0) ;

else if (isxdigit (LOWORD (wParam))) // hex digit

{

if (bNewNumber)

{

iFirstNum = iNumber ;

iNumber = 0 ;

}

bNewNumber = FALSE ;

if (iNumber <= MAXDWORD >> 4)

ShowNumber (hwnd, iNumber = 16 * iNumber + wParam -

(isdigit (wParam) ? '0': 'A' - 10)) ;

else

MessageBeep (0) ;

}

else // operation

{

if (!bNewNumber)

ShowNumber (hwnd, iNumber =

CalcIt (iFirstNum, iOperation, iNumber)) ;

bNewNumber = TRUE ;

iOperation = LOWORD (wParam) ;

}

return 0 ;

case WM_DESTROY:

PostQuitMessage (0) ;

return 0 ;

}

return DefWindowProc (hwnd, message, wParam, lParam) ;

}

HEXCALC.RC （摘录）

//Microsoft Developer Studio generated resource script.

#include "resource.h"

#include "afxres.h"

/////////////////////////////////////////////////////////////////////////////

// Icon

HEXCALC ICON DISCARDABLE "HexCalc.ico"

/////////////////////////////////////////////////////////////////////////////

#include "hexcalc.dlg"

HEXCALC.DLG

/*--------------------------------

HEXCALC.DLG dialog script

----------------------------------*/

HexCalc DIALOG -1, -1, 102, 122

STYLE WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX

CLASS "HexCalc"

CAPTION "Hex Calculator"

{

PUSHBUTTON "D", 68, 8, 24, 14, 14

PUSHBUTTON "A", 65, 8, 40, 14, 14

PUSHBUTTON "7", 55, 8, 56, 14, 14

PUSHBUTTON "4", 52, 8, 72, 14, 14

PUSHBUTTON "1", 49, 8, 88, 14, 14

PUSHBUTTON "0", 48, 8, 104,14, 14

PUSHBUTTON "0", 27, 26, 4, 50, 14

PUSHBUTTON "E", 69, 26, 24, 14, 14

PUSHBUTTON "B", 66, 26, 40, 14, 14

PUSHBUTTON "8", 56, 26, 56, 14, 14

PUSHBUTTON "5", 53, 26, 72, 14, 14

PUSHBUTTON "2", 50, 26, 88, 14, 14

PUSHBUTTON "Back", 8, 26, 104,32, 14

PUSHBUTTON "C", 67, 44, 40, 14, 14

PUSHBUTTON "F", 70, 44, 24, 14, 14

PUSHBUTTON "9", 57, 44, 56, 14, 14

PUSHBUTTON "6", 54, 44, 72, 14, 14

PUSHBUTTON "3", 51, 44, 88, 14, 14

PUSHBUTTON "+", 43, 62, 24, 14, 14

PUSHBUTTON "-", 45, 62, 40, 14, 14

PUSHBUTTON "*", 42, 62, 56, 14, 14

PUSHBUTTON "/", 47, 62, 72, 14, 14

PUSHBUTTON "%", 37, 62, 88, 14, 14

PUSHBUTTON "Equals", 61, 62, 104,32, 14

PUSHBUTTON "&&",38, 80, 24, 14, 14

PUSHBUTTON "|", 124, 80, 40, 14, 14

PUSHBUTTON "^", 94, 80, 56, 14, 14

PUSHBUTTON "<", 60, 80, 72, 14, 14

PUSHBUTTON ">", 62, 80, 88, 14, 14

}

作者: 假tp老tp练 时间: 2009-11-4 00:49
呼呼，大哥，
厉害^_^

作者: 宝贝 时间: 2009-11-4 00:49
请教下这段代码放在什么编译器才能执行,为什么我放在VC有错误呢

作者: 炫夜 时间: 2009-11-4 00:49
这个只是书上 copy下来的...
在windows 程序设计的配套光盘中有

作者: 水中de云 时间: 2009-11-4 00:49
take a look there:
http://blog.bc-cn.net/user1/121/archives/2006/882.shtml

作者: 世纪の风 时间: 2009-11-4 00:49
好长/。。。。。

作者: 藍麥可兒 时间: 2009-11-4 00:49
谢谢各位啊！但我急需一个C＋＋编的！！！

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