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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <netdb.h>
#include <errno.h>
#include <arpa/inet.h>
int main(int argc, char *argv[]){
char myHostName[1000];
char junk[INET_ADDRSTRLEN];
struct hostent *myHEP;
char **haddrp = NULL;
int addrno=0;
if (gethostname(myHostName, 1000) != 0) {
printf("Cannot get host name\n");
return 1;
} else {
printf("Hostname is %s\n", myHostName);
}
myHEP = gethostbyname(myHostName);
if (!myHEP) {
printf("Cannot get host entry from name %s (errno is %d)\n", myHostName, errno);
return 2;
}
printf("Result of gethostbyname: canonical h_name is %s\n", myHEP->h_name);
printf("Host addresses associated to name: \n");
haddrp = myHEP->h_addr_list;
while (*haddrp) {
printf("h_addr_list[%d] = %s\n", addrno++,
inet_ntop(myHEP->h_addrtype, *(haddrp++), junk, sizeof(junk)));
}
return 0;
}
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