pvjc24/cv10/program.c

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

#include <stdbool.h>

#define SIZE 100



int compare(const void* arg1, const void* arg2){
    char* s1 = *((char**)arg1);
    char* s2 = *((char**)arg2);
    return strcmp(s1, s2);
}

void printStudents(char* pole_smernikov[], int mena, int MaxCislo) {
    printf("Prijati studenti:\n");
    for (int i = 0; i < MaxCislo && i < mena; i++) {
        printf("%s", pole_smernikov[i]);
    }
    if (mena > MaxCislo) {
        printf("Neprijati studenti:\n");
        for (int i = MaxCislo; i < mena; i++) {
            printf("%s", pole_smernikov[i]);
        }
    }
}


void uvolnenie_pamate(char* pole_smernikov[], int mena){
for (int i = 0; i < mena; i++){
    free(pole_smernikov[i]);
}
}

bool CheckRepeat(char* pole_smernikov[], char* riadok, int mena) {
    for (int i = 0; i < mena; i++) {
        if (strcmp(pole_smernikov[i], riadok) == 0) {
            return true;
        }
    }
    return false;
}


int main (){

char* pole_smernikov[SIZE];
memset(pole_smernikov,0,SIZE*sizeof(char*));

int MaxCislo = 0;
scanf("%d", &MaxCislo); 
getchar();

int mena = 0;


if (MaxCislo == 0 || MaxCislo == -1){
printf("Nespravny vstup");
}

else{

	while (1){

	char line[SIZE];
	memset(line,0,SIZE);
	char* r = fgets(line,SIZE,stdin);

		if (r == NULL){
//nepodarilo sa
		break;
		}

//ci je prvy znak medzera alebo EOF
		if (isspace(line[0]) || line [0] == EOF) {
		break;
		}

		if (r!=NULL){
    // Podarilo sa
		int pocet_znakov = strlen(line);

			if (CheckRepeat(pole_smernikov, line,mena) == false){
			pole_smernikov[mena] = malloc(pocet_znakov + 1);
			memcpy(pole_smernikov[mena],line,pocet_znakov + 1);
			mena += 1;
			}
		}
	}
}

if (mena == 0){
	printf ("Ziadne prihlasky\n");
	return 0;
}

qsort(pole_smernikov, mena, sizeof(char*), compare);

printStudents(pole_smernikov, mena, MaxCislo);


uvolnenie_pamate( pole_smernikov, mena);

return 0;
}