extern int puts(char *s);
extern char *strcpy(char *s1, char *s2);
extern int strlen(char *s);

/* This is the main */
void main() {
  char message[500];
  char *startmsg;    /*Here's some comments that start
on a line andend here*/
  char *omsg;
  int len;
  
  //there are some comments here
  startmsg="hello world";
  omsg="!\n!";
  len=strlen(startmsg);
  strcpy(message,startmsg);
  message[len]=omsg[0];
  message[len+1]=omsg[1];
  message[len+2]=omsg[2];
  message[len+3]=omsg[3];
  puts(message);
}