Nahrát soubory do „cv6“
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13
cv6/Makefile
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13
cv6/Makefile
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CFLAGS= -std=c99 -g -Wall -Werror
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all: station
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%.o: %.c
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gcc -c -o $@ $< $(CFLAGS)
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station: main.o a_station.o
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gcc $(CFLAGS) main.o a_station.o -o station
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clean:
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rm *.o station
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33
cv6/a_station.c
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33
cv6/a_station.c
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#include "a_station.h"
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#include <stdlib.h>
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#include <string.h>
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struct station* create_station(){
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struct station* station = (struct station*)calloc(1,sizeof(struct station));
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station->tracks = (struct car**)calloc(STATION_SIZE, sizeof(struct car*));
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station->track_count = STATION_SIZE;
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return station;
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}
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void destroy_station(struct station* station){
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}
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int select_track(struct station* station, const char* target){
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return 0;
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}
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void add_target_capacity(struct station* station,const char* target, int capacity){
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}
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int get_target_capacity(struct station* station,const char* target){
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return 0;
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}
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int count_targets(struct station* station){
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return 0;
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}
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int count_capacity(struct station* station){
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return 0;
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}
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91
cv6/a_station.h
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91
cv6/a_station.h
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#ifndef STATION_H
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#define STATION_H
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// Pocet trati k dispozicii
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#define STATION_SIZE 10
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// Maximalny pocet znakov pre ulozenie nazvu cielovej stanice
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#define TARGET_SIZE 36
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/**
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* Jeden zaznam o kapacite do cielovej stanice
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*/
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struct car {
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// Cielova stanica / nazov
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char value[TARGET_SIZE];
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// Pocet cestujuchich
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int capacity;
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// Smernik na dalsi zaznam
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struct car* next;
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};
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/**
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* Cela databaza zaznamov
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*/
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struct station {
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// Dynamicke pole smernikov na zaznamy
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// jeden zaznam ma typ struct car*
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struct car** tracks;
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// Velkost pola tracks
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int track_count;
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};
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/**
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* Vytvori prazdnu stanicu.
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* Alokuje pole smernikov tracks na pociatocnu kapacitu STATION_SIZE
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* nastavi velkost capacity na STATION_SIZE
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* @return smernik na prazdnu stanicu
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*/
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struct station* create_station();
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/**
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* Uvolni pamat
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* @param smernik na databazu
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*/
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void destroy_station(struct station* station);
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/**
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* Vyberie poziciu v poli station->tracks pre ulozenie zaznamu target
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*
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* Proces vyberu by mal splnat kriteria pre hash funkciu:
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* - rovnaky retazec by mal vzdy mat rovnaky vysledok
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* - pre rozne retazce by mali byt vysledky co najviac rozne
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*
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* @param smernik na databazu
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* @param nazov cielovej stanice
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* @return cislo v intervale 0 az N-1, kde N je station->track_count
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*/
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int select_track(struct station* station, const char* target);
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/**
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* Zvysi zaznam o pocte cestujucich do danej cielovej stanice.
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*
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* Najprv sa vyberie cielova trat pomocou select_track(). Ak zaznam neexistuje,
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* vytvori sa novy. Ak zaznam na danej trati (spojkovom zozname) existuje, cislo sa pripocita.
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* V databaze nesmu byt dva zaznamy s rovnakou cielovou stanicou.
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*
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* @param smernik na databazu
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* @param nazov cielovej stanice
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*/
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void add_target_capacity(struct station* station,const char* target, int capacity);
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/**
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* Ziska zaznam o cielovej stanici.
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* @param smernik na databazu
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* @param nazov cielovej stanice
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*
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* @return kapacitu do cielovej stanice. Ak sa zaznam nenachedza, vrati nula.
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*/
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int get_target_capacity(struct station* station,const char* target);
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/**
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* Spocita pocet cielovych stanic
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* @param smernik na databazu
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*/
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int count_targets(struct station* station);
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/**
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* Spocita kapacitu vo vsetkych zaznamoch
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* @param smernik na databazu
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*/
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int count_capacity(struct station* station);
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#endif
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41
cv6/main.c
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41
cv6/main.c
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#include "a_station.h"
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#include <stdio.h>
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#include <time.h>
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#include <stdlib.h>
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void print_station(struct station* station){
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// Vypise celu stanicu
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printf("station>>>\n");
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// Prechadza vsetky trate
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for (int i = 0 ; i< station->track_count; i++){
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struct car* start = station->tracks[i];
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struct car* this = start;
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// Prechadza vsetky vozne
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while(this != NULL){
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printf("%s %d -> ",this->value,this->capacity);
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this=this->next;
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}
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printf("NULL\n");
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}
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printf("<<<station\n");
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}
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// Pre overenie ci to ide v poriadku
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void test_station(struct station* station){
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const char* stations[] = {"Presov","Kosice","Banska Bystrica","Banska Stiavnica","Povazska Bystrica","Snina","Humenne","Bratislava","Pezinok","Skalica","Ruzomberok","Bidovce","Michalovce","Poprad","Krompachy","Smizany","Vajkovce","Budimir","Modra","Myslava","Roznava","Gemerska Poloma","Stratena","Dobsina","Michalany","Kostolany"};
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int size=26;
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for (int i = 0; i < 50; i++){
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int s = rand() % size;
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int c = rand() % 20;
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printf("%s %d\n",stations[s],c);
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add_target_capacity(station,stations[s],c);
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print_station(station);
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}
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}
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int main(){
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srand(time(NULL));
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struct station* station = create_station();
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test_station(station);
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destroy_station(station);
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return 0;
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}
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