strdup: duplikujte řetězec

Originální popis anglicky: strdup - duplicate a string

Návod, kniha: POSIX Programmer's Manual

STRUČNĚ

#include <string.h> char *strdup(const char * s1);

POPIS / INSTRUKCE

The strdup() function shall return a pointer to a new string, which is a duplicate of the string pointed to by s1. The returned pointer can be passed to free(). A null pointer is returned if the new string cannot be created.

NÁVRATOVÁ HODNOTA

The strdup() function shall return a pointer to a new string on success. Otherwise, it shall return a null pointer and set errno to indicate the error.

CHYBY / ERRORY

The strdup() function may fail if:

ENOMEM

Storage space available is insufficient.

 

The following sections are informative.

PŘÍKLADY POUŽITÍ

None.

APPLICATION USAGE

None.

RATIONALE

None.

FUTURE DIRECTIONS

None.

SOUVISEJÍCÍ

free() , malloc() , 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 .