C语言中关于计时的命令

2025-02-11 06:16:37

推荐回答（3个）

回答1：

下面的程序是一个WINDOWS图形界面的数字时钟。研究一下，应该会有收获。

/*----------------------------------------------------------------------------
DIGCLOCK.C -- Digital Clock
(c) Charles Petzold, 1998
----------------------------------------------------------------------------*/
#include
#define ID_TIMER 1
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow){
static TCHAR szAppName[] = TEXT ("DigClock") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;

if (!RegisterClass (&wndclass)) {
MessageBox ( NULL, TEXT ("Program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}

hwnd = CreateWindow ( szAppName, TEXT ("Digital Clock"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;

ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;

while (GetMessage (&msg, NULL, 0, 0)) {
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}

void DisplayDigit (HDC hdc, int iNumber){
static BOOL fSevenSegment [10][7] = {
1, 1, 1, 0, 1, 1, 1, // 0
0, 0, 1, 0, 0, 1, 0, // 1
1, 0, 1, 1, 1, 0, 1, // 2
1, 0, 1, 1, 0, 1, 1, // 3
0, 1, 1, 1, 0, 1, 0, // 4
1, 1, 0, 1, 0, 1, 1, // 5
1, 1, 0, 1, 1, 1, 1, // 6
1, 0, 1, 0, 0, 1, 0, // 7
1, 1, 1, 1, 1, 1, 1, // 8
1, 1, 1, 1, 0, 1, 1 }
; // 9
static POINT ptSegment [7][6] = {
7, 6, 11, 2, 31, 2, 35, 6, 31, 10, 11, 10,
6, 7, 10, 11, 10, 31, 6, 35, 2, 31, 2, 11,
36, 7, 40, 11, 40, 31, 36, 35, 32, 31, 32, 11,
7 , 36, 11, 32, 31, 32, 35, 36, 31, 40, 11, 40,
6 , 37, 10, 41, 10, 61, 6, 65, 2, 61, 2, 41,
36, 37, 40, 41, 40, 61, 36, 65, 32, 61, 32, 41,
7 , 66, 11, 62, 31, 62, 35, 66, 31, 70, 11, 70 }
;
int iSeg ;
for (iSeg = 0 ; iSeg < 7 ; iSeg++)
if (fSevenSegment [iNumber][iSeg]) Polygon (hdc, ptSegment [iSeg], 6) ;
}

void DisplayTwoDigits (HDC hdc, int iNumber, BOOL fSuppress){
if (!fSuppress || (iNumber / 10 != 0)) DisplayDigit (hdc, iNumber / 10) ;
OffsetWindowOrgEx (hdc, -42, 0, NULL) ;
DisplayDigit (hdc, iNumber % 10) ;
OffsetWindowOrgEx (hdc, -42, 0, NULL) ;
}

void DisplayColon (HDC hdc){
POINT ptColon [2][4] = {
2, 21, 6, 17, 10, 21, 6, 25,
2, 51, 6, 47, 10, 51, 6, 55 }
;

Polygon (hdc, ptColon [0], 4) ;
Polygon (hdc, ptColon [1], 4) ;

OffsetWindowOrgEx (hdc, -12, 0, NULL) ;
}

void DisplayTime (HDC hdc, BOOL f24Hour, BOOL fSuppress){
SYSTEMTIME st ;
GetLocalTime (&st) ;
if (f24Hour) DisplayTwoDigits (hdc, st.wHour, fSuppress) ;
else
DisplayTwoDigits (hdc, (st.wHour %= 12) ? st.wHour : 12, fSuppress) ;
DisplayColon (hdc) ;
DisplayTwoDigits (hdc, st.wMinute, FALSE) ;
DisplayColon (hdc) ;
DisplayTwoDigits (hdc, st.wSecond, FALSE) ;
}
LRESULT CALLBACK WndProc ( HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam){
static BOOL f24Hour, fSuppress ;
static HBRUSH hBrushRed ;
static int cxClient, cyClient ;
HDC hdc ;
PAINTSTRUCT ps ;
TCHAR szBuffer [2] ;

switch (message) {
case WM_CREATE:
hBrushRed = CreateSolidBrush (RGB (255, 0, 0)) ;
SetTimer (hwnd, ID_TIMER, 1000, NULL) ;// fall through

case WM_SETTINGCHANGE:
GetLocaleInfo (LOCALE_USER_DEFAULT, LOCALE_ITIME, szBuffer, 2) ;
f24Hour = (szBuffer[0] == '1') ;

GetLocaleInfo (LOCALE_USER_DEFAULT, LOCALE_ITLZERO, szBuffer, 2) ;
fSuppress = (szBuffer[0] == '0') ;

InvalidateRect (hwnd, NULL, TRUE) ;
return 0 ;

case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_TIMER:
InvalidateRect (hwnd, NULL, TRUE) ;
return 0 ;

case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;

SetMapMode (hdc, MM_ISOTROPIC) ;
SetWindowExtEx (hdc, 276, 72, NULL) ;
SetViewportExtEx (hdc, cxClient, cyClient, NULL) ;

SetWindowOrgEx (hdc, 138, 36, NULL) ;
SetViewportOrgEx (hdc, cxClient / 2, cyClient / 2, NULL) ;
SelectObject (hdc, GetStockObject (NULL_PEN)) ;
SelectObject (hdc, hBrushRed) ;

DisplayTime (hdc, f24Hour, fSuppress) ;

EndPaint (hwnd, &ps) ;
return 0 ;

case WM_DESTROY:
KillTimer (hwnd, ID_TIMER) ;
DeleteObject (hBrushRed) ;
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

回答2：

头文件里
有些库函数可以用time() clock() localtime()....
你那个计时可以创建一个线程CreateThread();
在线程函数里
用clock()就可以了
定义两个clock_t tOld,tNew;
然后tNew=clock()，tOld=tNew;
创建一个无限循环里面while(1)
{
tNew=clock();
if((tNew-tOld)/CLOCKS_PER_SEC)
{
tOld=tNew;
//给蛇长度+1的代码。。。。
}
//Sleep(100);
}
楼上的是window应用程序，设计timer消息。如果你是那种程序，就创建一个settimer()，然后再WM_TIMER消息中给你的蛇+1

回答3：

这个问题我也很想知道，大虾们顶一下，你可以试着找找看C函数。里面可能会有和系统时间校对的特别函数。我想你的老师既然让你编了，就一定会有这样的函数的。从网上查查看这个函数的使用格式，想要自己编一个这是绝不可能的！能不能编成功以后告诉我方法，或者把函数传给我。非常谢谢 cool_windy@hotmail.com

最新问答

C语言中关于计时的命令

求routeros 2.9.6 软路由的教程!(不要视频,要图文的)

感谢妈妈的作文600字

下列有关台湾省的叙述，正确的是（　　）A．热带、亚热带气候，温暖湿润B．森林资源丰富，矿产资源贫乏C

您好，在百度上看见您的问题，想买三星i9000，不知您买了吗？在哪买的？用着怎么样？我也想在玳玳网上买一