VC + + CopyFile function use method

BOOL CopyFile (

LPCTSTR lpexistingfilename,//pointer to name of a existing file
LPCTSTR lpnewfilename,//pointer to filename-to-copy to
BOOL bfailifexists//Flag for operation if file exists
);
The meaning of each of the parameters:
LPCTSTR Lpexistingfilename,//The name of the source file you want to copy
LPCTSTR Lpnewfilename,//The target file name you want to copy
BOOL bfailifexists//Assuming target already exists, do not copy (True) and return false, overwrite target (false)

Such as:
Copy files c:\log.txt to D:\log.txt, assuming D:\log.txt already exists, overwrite
CopyFile ("C:\\log.txt", "D:\\log.txt", false);

VC + + CopyFile function use method