Unix/Linux Go Back    

Linux 2.6 - man page for strcpy (linux section 3posix)

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:   man
Select Man Page Set:       apropos Keyword Search (sections above)

STRCPY(P)			    POSIX Programmer's Manual				STRCPY(P)

       strcpy - copy a string

       #include <string.h>

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

       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.

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

       No errors are defined.

       The following sections are informative.

   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);

       Character movement is performed differently in different implementations.  Thus,  overlap-
       ping 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.



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

       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 orig-
       inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .

IEEE/The Open Group			       2003					STRCPY(P)
Unix & Linux Commands & Man Pages : ©2000 - 2018 Unix and Linux Forums

All times are GMT -4. The time now is 07:04 AM.