tchar string functions

/* String functions */

_tcscpy_s,

_tcscat_s,

_tcslen, _tcsnlen,

_tcschr,

_tcsdup,

_tprintf, _tprintf_s, _stprintf, _stprintf_s

 /* String conversion functions */

// Convert string to number

_tstoi, _tstof, _tstol, _tcstod, _tcstol, _tcstoul

_ttoi, _ttol, _ttoi64

// Convert number to string

_itot_s, _ltot_s, _ultot_s, _i64tot_s, _ui64tot_s