Can you please explain these functions!

strcpy
getcwd
chdir
_lread
_lclose

here it is...

strcpy is copy a character into a assign buffer.
getcwd is to retrieve the current working directory. (as the function named, get current working directory)
chdir = _chdir is to change the current working directory. (as the function named, change current working directory)
_lread is to read the data from a specified file.
_lclose is to close the specified file

regards,

thanks a lot!