inet_ntoa()--Translate IP Address to Dotted Decimal Format

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

 char *inet_ntoa(struct in_addr internet_address)

The inet_ntoa() function is used to translate an Internet address from a 32-bit IP address to dotted decimal format.

Authorities and Locks

None.

Parameters

internet_address

(Input) The 32-bit IP address that is to be converted to dotted decimal format.

Return Value

inet_ntoa() returns one of the following values:

• NULL (unsuccessful)
  
  
• s (where s is the pointer to the Internet address in dotted decimal format)

Usage Notes

1. The pointer returned by inet_ntoa() points to static storage that is overridden on subsequent inet_ntoa() functions.
   
   
2. Do not use the inet_ntoa() function in a multithreaded environment. See the multithread alternative inet_ntoa_r function.