I have the following code, which I am trying ot change an integer number to wstring then I can pass it to a text file. but the problm is that when it reached to the _itow_s(vec, img_stamp, 10); line it change the number to a negative number. any body know what is the problem?
wchar_t img_stamp[64];
while(c<_timeStamp.size()){
vec=_timeStamp.at(c);
_itow_s(vec, img_stamp, 10);
_data +=std::wstring(img_stamp);
_data +=std::wstring(L"\r\n");
c++;
}
HANDLE hFile;
DWORD wmWritten;
hFile = CreateFile( "D:\\test\\testing.txt" ,GENERIC_READ|GENERIC_WRITE,FILE_SHARE_READ,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
if(hFile!=NULL){
DWORD len=sizeof(_data);
WriteFile(hFile, _data.c_str(), _data.size() * 2, &wmWritten, NULL);
}
CloseHandle(hFile);
Why don't you use a wstringstream
?
wstringstream ws;
for (...) { // some loop
ws << myint << ", ";
}
//now, you can use ws.str() to extract a wstring from the stream
C++11 added a function called ' std::to_string ()' which converts a number, float, or long long to a std::string. There is also a related set of functions for wstrings: std::to_wstring ().
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