C / C++ / MFC

 CString oneLine;     //initialize a CString 
 bool flag = FALSE;   //flag for result
 CStdioFile  fS (_path_, CFile::modeRead ); //open the file
 int lineNumber = 0;   //hold the line number
 while( fS.readLine(oneLine))  //readLine returns false if EOF
  {
    if( oneLine.Find(L"String")!= -1 )  //Find returns -1 if no match
    { flag = TRUE; break; }
   lineNumber++;   //iterate lineNumber
  }
//lineNumber will hold the line in which the string was found. To get exact character place store what Find returns somewhere.

Shaunak De wrote:

If you are searching for a string in a text file...

{
	...
	CString strFormatCpp = TranslateFormatDate(strFormatVB);

	tm timeDate;
	memset(&timeDate,0,sizeof(tm ));
	TCHAR * pRes = strptime (strMyDate, strFormatCpp, &timeDate);
				
	if ( pRes != NULL )
	{
		COleDateTime oleDate;
		oleDate.SetDateTime(1900 + timeDate.tm_year,timeDate.tm_mon+1,timeDate.tm_mday,timeDate.tm_hour,timeDate.tm_min,timeDate.tm_sec);

	}
}

CString TranslateFormatDate(const CString & strFormat) 
{
	CString strResult;
	int nChar = 0;
	while ( nChar < strFormat.GetLength() )
	{
		switch ( strFormat[nChar] )
		{
		case 'A':
			if ( MatchFormatKey(_T("AMPM"),_T("%p"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'a':
			if ( MatchFormatKey(_T("ampm"),_T("%p"),strFormat, nChar,strResult) ) // Lower does not exist in C++?
				continue;
		case 'y':
			if ( MatchFormatKey(_T("yyyy"),_T("%Y"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("yy"),_T("%y"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'M':
			if ( MatchFormatKey(_T("MMMM"),_T("%B"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("MMM"),_T("%b"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("MM"),_T("%m"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("M"),_T("%#m"),strFormat, nChar,strResult) ) 
				continue;
			break;
		case 'd':
			if ( MatchFormatKey(_T("dddd"),_T("%A"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("ddd"),_T("%a"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("dd"),_T("%d"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("d"),_T("%#d"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'h':
			if ( MatchFormatKey(_T("hh"),_T("%I"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("h"),_T("%#I"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'H':
			if ( MatchFormatKey(_T("HH"),_T("%H"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("H"),_T("%#H"),strFormat, nChar,strResult) )
				continue;
			break;
		case 'm':
			if ( MatchFormatKey(_T("mm"),_T("%M"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("m"),_T("%#M"),strFormat, nChar,strResult) )
				continue;
			break;
		case 's':
			if ( MatchFormatKey(_T("ss"),_T("%S"),strFormat, nChar,strResult) )
				continue;
			if ( MatchFormatKey(_T("s"),_T("%#S"),strFormat, nChar,strResult) )
				continue;
			break;
		}

		strResult+=strFormat[nChar];
		nChar++;
	}

	return strResult;
}

bool MatchFormatKey(const CString & strKey,const CString & strTransKey,const CString & strFormat, int & nPos,CString & strResult) 
{
	if ( strFormat.Mid(nPos, strKey.GetLength()) != strKey )
		return false;

	strResult+=strTransKey;
	nPos+=strKey.GetLength();

	return true;
}

#include <cstdio>
#include <ctime>
 

int main ()
{
  time_t rawtime;
  struct tm * timeinfo;
  char buffer [80];
  
  time ( &rawtime );
  timeinfo = localtime ( &rawtime );

  strftime (buffer,80,"%Y %m %d  ",timeinfo);
 
  puts (buffer);

  return 0;
}

Richard MacCutchan wrote:

It's strptime() which, unfortunately, is not available in Windows

char buffer[256];
CString cs = buffer;

GetLocaleInfo(m_LCID, LOCALE_SSHORTDATE, m_csOriginalSDateFormat.GetBuffer(MAX_PATH + 1), MAX_PATH);
m_csOriginalSDateFormat.ReleaseBuffer();

m_csNewSDateFormat = _T("M/d/yyyy");

SetLocaleInfo(m_LCID, LOCALE_SSHORTDATE, m_csNewSDateFormat);
oleStartTime.ParseDateTime(csDateTime);
SetLocaleInfo(m_LCID, LOCALE_SSHORTDATE, m_csOriginalSDateFormat);

COleDateTime t(1999, 3, 19, 22, 15, 0);

CString str = t.Format(_T("%A, %B %d, %Y"));

COleDatetime t;
t.IsThisStringADateWithThisFormat(_T("10012012"),"ddMMyyyy");