/*****************************************************************************************************************
 *                                                                                                               *
 * Write a program to "fold" long input lines into two or more shorter lines after the last non-blank character  *
 * that occurs before the n-th column of input. Make sure your program does something intelligent with very long *
 * lines, and if there are no blanks or tabs before the specified column.                                        *
 *                                                                                                               *
 *****************************************************************************************************************/

#include <stdio.h>

#define LONGLINE 80                                     /* 80+ znakov je dlhy riadok, softlimit */
#define MAXLINE 800                                     /* 800+ znakov je prilis dlhy riadok, hardlimit */

int main(void) {
        int c, i;                                       /* miesto pre nacitany znak a pocet znakov v riadku */
        i = 0;                                          /* na zaciatku sme na nultej pozicii riadku */

        while ((c = getchar()) != EOF) {                /* nacitavame znaky az do EOF */
                if (i >= LONGLINE)                      /* sme za softlimit dlzky riadku? */
                        if (c == '\t' || c == ' ')      /* ano sme, tak ak pride medzera alebo TAB, nahradime ich '\n' */
                                c = '\n';
                else if (i >= MAXLINE) {                /* sme za hardlimit riadku? */
                        putchar('\n');                  /* ano sme, tak natvrdo zaradime '\n' */
                        i = 0;                          /* nastavime poziciu na riadku na nulu */
                }
                putchar(c);                             /* vytlacime bud povodny znak, alebo nahradeny '\n' za '\t' alebo ' ' po dosiahnuti softlimitu */

                if (c != '\n')                          /* posunieme sa v riadku iba vtedy, ak nie sme '\n' */
                        ++i;
                else                                    /* sme '\n', tak vynulujeme poziciu na riadku */
                        i = 0;
        }

        return 0;                                       /* slusne sa rozlucime */
}