I'm having issues with converting a double to a string, and then to a message box. From what i've read, sprintf is (loosely, but not the best choice due to certain points) the function i want from . Here's my example code, but i'm not sure where i'm going wrong.
DOUBLE time;
char timearray[30];
time = (double)(end.QuadPart - st.QuadPart)/(double)freq.QuadPart;
sprintf(timearray, "%lf", time);
where'd i go from here? i've tried things like;
MessageBox(NULL, timearray, TEXT("mb"), MB_OK);
But this gives the following error on the timearray parameter: error of type "*char" is incompatible with parameter of type "LPCWSTR".
Any ideas as to where i'm going wrong?
Probably your project is set to use wide (Unicode) characters by default, so you should use wchar_t and wsprintf (better, wnsprintf).
double time;
wchar_t buffer[30];
time = (double)(end.QuadPart - st.QuadPart)/(double)freq.QuadPart;
_snwprintf(buffer, sizeof(buffer)/sizeof(*buffer), L"%lf", time);
MessageBoxW(NULL, buffer, L"mb", MB_OK);
or, if you want to use the TCHARs:
double time;
TCHAR buffer[30];
time = (double)(end.QuadPart - st.QuadPart)/(double)freq.QuadPart;
_sntprintf(buffer, sizeof(buffer)/sizeof(*buffer), _T("%lf"), time);
MessageBox(NULL, buffer, _T("mb"), MB_OK);