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a3/program.c

@@ -0,0 +1,63 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define MAX_NAME_LEN 256
+#define MAX_STUDENTS 10000
+
+int compare(const void *a, const void *b) {
+    return strcmp(*(const char **)a, *(const char **)b);
+}
+
+int main() {
+    int max_students;
+    if (scanf("%d", &max_students) != 1 || max_students <= 0) {
+        puts("Nespravny vstup");
+        return 1;
+    }
+    
+    char buffer[MAX_NAME_LEN];
+    fgets(buffer, sizeof(buffer), stdin);
+
+    char *names[MAX_STUDENTS];
+    int counter  = 0;
+
+    while (fgets(buffer, sizeof(buffer), stdin)) {
+        // remove newline
+        buffer[strcspn(buffer, "\n")] = '\0';
+        if (buffer[0] == '\0') break;
+
+        // check duplicate
+        int duplicate = 0;
+        for (int i = 0; i < counter; i++) {
+            if (strcmp(names[i], buffer) == 0) { duplicate = 1; break; }
+        }
+        if (!duplicate) {
+            names[counter++] = strdup(buffer);
+            if (counter >= MAX_STUDENTS) break;
+        }
+    }
+
+    if (counter == 0) {
+        puts("Ziadne prihlasky");
+        return 1;
+    }
+
+    qsort(names, counter, sizeof(char *), compare);
+
+    puts("Prijati studenti:");
+    int accepted = counter < max_students ? counter : max_students;
+    for (int i = 0; i < accepted; i++) {
+        puts(names[i]);
+    }
+
+    if (counter > max_students) {
+        puts("Neprijati studenti:");
+        for (int i = max_students; i < counter; i++) {
+            puts(names[i]);
+        }
+    }
+
+    for (int i = 0; i < counter; i++) free(names[i]);
+    return 0;
+}