“program”

cv10/program.c

@@ -8,66 +8,78 @@ int compare(const void *a, const void *b) {
     return strcmp(*(const char **)a, *(const char **)b);
 }
 
+void free_memory(char **array, int length) {
+    for (int i = 0; i < length; i++) {
+        free(array[i]);
+    }
+    free(array);
+}
+
 int main() {
     int max_students;
-    char temp[MAX_NAME_LENGTH];
+    char name[MAX_NAME_LENGTH];
-    char **students;
+    char **students = NULL;
-    int count = 0, unique_count = 0;
+    int num_students = 0;
     
-    if (scanf("%d", &max_students) != 1 || max_students <= 0) {
+    if (scanf("%d\n", &max_students) != 1 || max_students <= 0) {
         puts("Nespravny vstup");
         return 1;
     }
 
-    students = malloc(max_students * sizeof(char *));
+    students = (char **)malloc(max_students * sizeof(char *));
     if (students == NULL) {
         puts("Memory allocation failed");
         return 1;
     }
 
-    while (scanf("%99s", temp) == 1) {
+    while (fgets(name, MAX_NAME_LENGTH, stdin) && num_students < max_students) {
-        int is_unique = 1;
+        name[strcspn(name, "\n")] = 0; 
-        for (int i = 0; i < unique_count; i++) {
+
-            if (strcmp(students[i], temp) == 0) {
+        if (strlen(name) == 0) { 
-                is_unique = 0;
+            break;
+        }
+
+
+        int duplicate = 0;
+        for (int i = 0; i < num_students; i++) {
+            if (strcmp(students[i], name) == 0) {
+                duplicate = 1;
                 break;
             }
         }
 
-        if (is_unique) {
+        if (!duplicate) {
-            students[unique_count] = strdup(temp);
+            students[num_students] = strdup(name);
-            if (students[unique_count] == NULL) {
+            if (students[num_students] == NULL) {
                 puts("Memory allocation failed");
-                for (int i = 0; i < unique_count; i++) {
+                free_memory(students, num_students);
-                    free(students[i]);
-                }
-                free(students);
                 return 1;
             }
-            unique_count++;
+            num_students++;
-            if (unique_count >= max_students) {
-                break;
-            }
         }
     }
 
-    if (unique_count == 0) {
+    if (num_students == 0) {
         puts("Ziadne prihlasky");
         free(students);
         return 1;
     }
 
-    qsort(students, unique_count, sizeof(char *), compare);
+    qsort(students, num_students, sizeof(char *), compare);
 
     puts("Prijati studenti:");
-    for (int i = 0; i < unique_count; i++) {
+    for (int i = 0; i < num_students; i++) {
-        puts(students[i]);
+        if (i < max_students) {
+            puts(students[i]);
+        } else {
+            if (i == max_students) {
+                puts("Neprijati studenti:");
+            }
+            puts(students[i]);
+        }
     }
 
-    for (int i = 0; i < unique_count; i++) {
+    free_memory(students, num_students);
-        free(students[i]);
-    }
-    free(students);
 
     return 0;
 }