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STRCPY   (3) manpage
STRCPY
3
1993-04-11
GNU
Linux Programmer's Manual
  • NAME
      strcpy, strncpy - copy a string
  • SYNOPSIS 
      
 #include <string.h>

 char *strcpy(char * dest , const char * src );


          char *strncpy(char * dest , const char * src , size_t  n );
  • DESCRIPTION
      The strcpy() function copies the string pointed to by src
      (including the terminating `\0' character) to the array pointed to by
      dest.  The strings may not overlap, and the destination string
      dest must be large enough to receive the copy.
      The strncpy() function is similar, except that not more than
      n bytes of src are copied. Thus, if there is no null byte
      among the first n bytes of src, the result will not be
      null-terminated.
      In the case where the length of
      src
       is less than that of
      n ,
       the remainder of
      dest
       will be padded with nulls.
  • RETURN VALUE
      The strcpy() and strncpy() functions return a pointer to
      the destination string dest.
  • BUGS
      If the destination string of a strcpy() is not large enough
      (that is, if the programmer was stupid/lazy, and failed to check
      the size before copying) then anything might happen.
      Overflowing fixed length strings is a favourite cracker technique.
  • CONFORMING TO
      SVID 3, POSIX, BSD 4.3, ISO 9899
  • SEE ALSO
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