#include <stdio.h>

#define MAXLINE 1000   /* maximum input line size */ 

int max;               /* maximum length seen so far */ 
char line[MAXLINE];    /* current input line */ 
char longest[MAXLINE]; /* longest line saved here */ 

int my_getline(void);
void copy(void);


/* print longest input line; specialized version -> worse, less general */ 
main()
{
  int len;
  extern int max;
  extern char longest[];

  max = 0;
  while ((len=my_getline()) > 0)
    if (len > max) {
      max = len;
      copy();
    }
  if (max > 0)    /* there was a line */ 
    printf("%s", longest);
  return 0;
}


/* getline: specialized version */ 
int my_getline(void)
{
  int c, i;
  extern char line[];

  for (i = 0; i < MAXLINE-1 && (c=getchar()) != EOF && c != '\n'; ++i)
    line[i] = c;
  if (c == '\n') {
    line[i] = c;
    ++i;
  }
  line[i] = '\0';
  return i;
}


/* copy: specialized version */ 
void copy(void)
{
  int i;
  extern char line[], longest[];

  i = 0;
  while ((longest[i] = line[i]) != '\0')
    ++i;
}