inet_ntoa() — Get the decimal Internet host address

Standards

Format

#define _XOPEN_SOURCE_EXTENDED 1
#include <arpa/inet.h>

char *inet_ntoa(struct in_addr in);

#define _OE_SOCKETS
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

char *inet_ntoa(struct in_addr in);

General description

To provide an ASCII input/output format for applications using this function, define feature test macro __LIBASCII as described __LIBASCII.

Special behavior for C++: To use this function with C++, you must use the _XOPEN_SOURCE_EXTENDED 1 feature test macro.

Returned value

Returns a pointer to the Internet address expressed in dotted-decimal notation. The storage pointed to exists on a per-thread basis and is overwritten by subsequent calls.

Related information

• arpa/inet.h
• netinet/in.h
• sys/socket.h
• sys/types.h
• inet_addr() — Translate an Internet address into network byte order
• inet_lnaof() — Translate a local network address into host byte order
• inet_makeaddr() — Create an Internet host address
• inet_netof() — Get the network number from the Internet host sddress
• inet_network() — Get the network number from the decimal host address
• inet_ntop() — Convert Internet address format from binary to text
• inet_pton() — Convert Internet address format from text to binary