80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define MAX_NAME_LENGTH 100
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int compare(const void *a, const void *b) {
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return strcmp(*(const char **)a, *(const char **)b);
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}
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void free_memory(char **array, int length) {
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for (int i = 0; i < length; i++) {
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free(array[i]);
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}
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free(array);
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}
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int main() {
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int max_students;
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char name[MAX_NAME_LENGTH];
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char **students = NULL;
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int num_students = 0;
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if (scanf("%d\n", &max_students) != 1 || max_students <= 0) {
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puts("Nespravny vstup");
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return 1;
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}
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students = (char **)malloc(max_students * sizeof(char *));
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if (students == NULL) {
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puts("Memory allocation failed");
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return 1;
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}
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while (fgets(name, MAX_NAME_LENGTH, stdin)) {
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name[strcspn(name, "\n")] = 0;
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if (strlen(name) == 0) {
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break;
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}
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int duplicate = 0;
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for (int i = 0; i < num_students; i++) {
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if (strcmp(students[i], name) == 0) {
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duplicate = 1;
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break;
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}
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}
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if (!duplicate) {
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if (num_students < max_students) {
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students[num_students] = strdup(name);
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if (students[num_students] == NULL) {
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puts("Memory allocation failed");
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free_memory(students, num_students);
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return 1;
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}
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num_students++;
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}
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}
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}
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if (num_students == 0) {
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puts("Ziadne prihlasky");
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free(students);
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return 1;
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}
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qsort(students, num_students, sizeof(char *), compare);
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puts("Prijati studenti:");
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for (int i = 0; i < num_students; i++) {
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puts(students[i]);
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}
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free_memory(students, num_students);
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return 0;
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}
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