#include <stdio.h>

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

int getline(char line[], int maxline);	/* function prototype */

void copy(char to[], char from[]);


/* print the longest input line */
main()
{
	int len; /* current line length */
	int max; /* maximum length seen so far */
	char line[MAXLINE]; /* current input line */
	char longest[MAXLINE]; /* longest line saved here */

	max = 0;
	while ((len = getline(line, MAXLINE)) > 0)
	   if (len > max) {
		max = len;
		copy(longest, line);
	}

	if (max > 0) /* there was a line */
	   printf("%s", longest);
	return 0;
}


/* getline: read a line into s, return length */
int getline(char s[],int lim)
{
	int c, i;

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


/* copy: copy 'from' into 'to'; assume to is big enough */
void copy(char to[], char from[])
{
	int i;

	i = 0;
	while ((to[i] = from[i]) != '\0')
	   ++i;
}




/*

 * The end of a string is marked by a null character '\0'.

 */