#include <stdio.h>

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

int getliner(char line[], int maxline);
void copy(char to[], char from[]);

/* print longest input line */

main()
{
    int len;
    int max;
    char line[MAXLINE];
    char longest[MAXLINE];

    max = 0;
    while ((len = getliner(line, MAXLINE)) > 0)
    {
        if(len > max)
        {
            max = len;
            copy(longest, line);
        }
    }
    if(max > 0)
    {
        printf("%s", longest);
    }
    return 0;
}

/* getliner: read a line into s, append '\0' to end, return length */

int getliner(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;
}