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Test Your Knowledge in Computers #910
Difficulty: Easy
In C, you can declare a pointer as follows: data_type * pointer_variable_name;
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gethostname(3) [linux man page]

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

gethostname - get name of current host SYNOPSIS
#include <unistd.h> int gethostname(char *name, size_t namelen); DESCRIPTION
The gethostname() function shall return the standard host name for the current machine. The namelen argument shall specify the size of the array pointed to by the name argument. The returned name shall be null-terminated, except that if namelen is an insufficient length to hold the host name, then the returned name shall be truncated and it is unspecified whether the returned name is null-terminated. Host names are limited to {HOST_NAME_MAX} bytes. RETURN VALUE
Upon successful completion, 0 shall be returned; otherwise, -1 shall be returned. ERRORS
No errors are defined. The following sections are informative. EXAMPLES
gethostid() , uname() , the Base Definitions volume of IEEE Std 1003.1-2001, <unistd.h> COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- 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 . IEEE
/The Open Group 2003 GETHOSTNAME(P)

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