STRCAT(3)                        Linux Programmer's Manual                        STRCAT(3)



NAME
       strcat, strncat - concatenate two strings

SYNOPSIS
       #include <string.h>

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

       char *strncat(char *dest, const char *src, size_t n);

DESCRIPTION
       The  strcat()  function  appends  the src string to the dest string, overwriting the
       terminating null byte ('\0') at the end of dest, and then adds  a  terminating  null
       byte.   The  strings may not overlap, and the dest string must have enough space for
       the result.

       The strncat() function is similar, except that

       *  it will use at most n characters from src; and

       *  src does not need to be null-terminated if it contains n or more characters.

       As with strcat(), the resulting string in dest is always null-terminated.

       If src contains n or more characters, strncat() writes n+1  characters  to  dest  (n
       from  src  plus  the terminating null byte).  Therefore, the size of dest must be at
       least strlen(dest)+n+1.


RETURN VALUE
       The strcat() and strncat() functions return a pointer to the resulting string dest.

CONFORMING TO
       SVr4, 4.3BSD, C89, C99.

SEE ALSO
       bcopy(3),  memccpy(3),  memcpy(3),  strcpy(3),  string(3),  strncpy(3),   wcscat(3),
       wcsncat(3)

COLOPHON
       This  page is part of release 3.35 of the Linux man-pages project.  A description of
       the  project,  and   information   about   reporting   bugs,   can   be   found   at
       http://man7.org/linux/man-pages/.



GNU                                      2011-09-28                               STRCAT(3)