NAME

       strcpy - copy a string

SYNOPSIS

       #include <string.h>

       char *strcpy(char *restrict s1, const char *restrict s2);

DESCRIPTION

       The  strcpy()  function shall copy the string pointed to by s2 (including the terminating null byte) into
       the array pointed to by s1. If copying  takes  place  between  objects  that  overlap,  the  behavior  is
       undefined.

RETURN VALUE

       The strcpy() function shall return s1; no return value is reserved to indicate an error.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

   Initializing a String
       The following example copies the string "----------" into the permstring variable.

              #include <string.h>
              ...
              static char permstring[11];
              ...
              strcpy(permstring, "----------");
              ...

   Storing a Key and Data
       The following example allocates space for a key using malloc() then uses strcpy() to place the key there.
       Then  it  allocates  space  for  data  using malloc(), and uses strcpy() to place data there.  (The user-
       defined function dbfree() frees memory previously allocated to an array of type struct element *.)

              #include <string.h>
              #include <stdlib.h>
              #include <stdio.h>
              ...
              /* Structure used to read data and store it. */
              struct element {
                  char *key;
                  char *data;
              };

              struct element *tbl, *curtbl;
              char *key, *data;
              int count;
              ...
              void dbfree(struct element *, int);
              ...
              if ((curtbl->key = malloc(strlen(key) + 1)) == NULL) {
                  perror("malloc"); dbfree(tbl, count); return NULL;
              }
              strcpy(curtbl->key, key);

              if ((curtbl->data = malloc(strlen(data) + 1)) == NULL) {
                  perror("malloc"); free(curtbl->key); dbfree(tbl, count); return NULL;
              }
              strcpy(curtbl->data, data);
              ...

APPLICATION USAGE

       Character movement is performed differently in different implementations.  Thus,  overlapping  moves  may
       yield surprises.

       This issue is aligned with the ISO C standard; this does not affect compatibility with XPG3 applications.
       Reliable error detection by this function was never guaranteed.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       strncpy() , the Base Definitions volume of IEEE Std 1003.1-2001, <string.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition,
       Standard  for  Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers,
       Inc and The Open Group. In the event of any discrepancy between this version and the  original  IEEE  and
       The  Open  Group  Standard,  the  original  IEEE and The Open Group Standard is the referee document. The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group                                   2003                                             STRCPY(P)