strings_with_>2016_number

#include <stdio.h>
#include <string.h>

int main(void){
    enum {n = 2016};
    int i, number = 0, maxline = 1000, flag = 0;
    char buf[1000], c[1000];

    while (fgets(c, maxline, stdin)){
        strcpy(buf, c);
        number = 0;
        i = 0;
        while (i < maxline && buf[i] != EOF && buf[i] != '\0'){
            if (buf[i] <= '9' && buf[i] >= '0'){
                number = number*10 + (buf[i] - '0');
                if (number > n){
                    flag = 1;
                }
            }
            else{
                number = 0;
            }
            i++;
    }

        if (flag == 1){
            puts(c);
        }
        flag = 0;
    }

    return 0;
}