/* creates mhosts.h for the server */#include <netdb.h>#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <fcntl.h>#include <time.h>#include <signal.h>#include <sys/types.h>#include <sys/stat.h>#include <sys/socket.h>#include <netinet/in.h>#include <arpa/inet.h>unsigned long intlookup (char *hostname){  struct hostent *name;  unsigned long int address;  if ((address = inet_addr (hostname)) != -1)    return address;  if ((name = gethostbyname (hostname)) == NULL)    return 0;  memcpy (&address, name->h_addr, name->h_length);  return address;}int verror(char *et){    printf("ERROR: %s\n",et);    exit(0x1);}int main(int argc,char **argv) { char ipin[200]; int ip1,ip2; FILE *pwh; printf("-Pre-Compilation----------------------\n"); printf("enter the master host 1 : "); if(fgets(ipin,sizeof(ipin),stdin)==NULL)     verror("No Input"); ip1=lookup(ipin); if(ip1==0)     verror("cannot resolve Host"); printf("enter the master host 2 : "); if(fgets(ipin,sizeof(ipin),stdin)==NULL)     verror("No Input"); ip2=lookup(ipin); fflush(stdout); printf("--------------------------------------\n"); if((pwh=fopen("mhosts.h","w"))==NULL) {     printf("Cannot open mhosts.h, aborting\n");     exit(0x1); } fprintf(pwh,"/* master hosts */\n\n"); fprintf(pwh,"#define MSERVER1 %i\n#define MSERVER2 %i\n",ip1,ip2); fclose(pwh); printf("mhosts.h created..\n");       exit(0x0);}