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 .