“program”

cv10/program.c

@@ -1,94 +1,74 @@
-~~#include <stdio.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
 #define MAX_NAME_LENGTH 100
 
 int compare(const void *a, const void *b) {
-    const char *name1 = *(const char **)a;
-    const char *name2 = *(const char **)b;
-    return strcmp(name1, name2);
+    return strcmp(*(const char **)a, *(const char **)b);
 }
 
 int main() {
     int max_students;
-    char name[MAX_NAME_LENGTH];
-    char **names = NULL;
-    int size = 0, capacity = 10;
-
-    names = (char **)malloc(capacity * sizeof(char *));
-    if (names == NULL) {
-        puts("Memory allocation error");
-        return 0;
-    }
-
-    if (scanf("%d\n", &max_students) != 1 || max_students <= 0) {
+    char temp[MAX_NAME_LENGTH];
+    char **students;
+    int count = 0, unique_count = 0;
+    
+    if (scanf("%d", &max_students) != 1 || max_students <= 0) {
         puts("Nespravny vstup");
-        free(names);
-        return 0;
+        return 1;
     }
-
-    while (fgets(name, MAX_NAME_LENGTH, stdin) != NULL) {
-        if (name[0] == '\n') break;
-        name[strcspn(name, "\n")] = 0;
-
-        int duplicate = 0;
-        for (int i = 0; i < size; i++) {
-            if (strcmp(names[i], name) == 0) {
-                duplicate = 1;
+    
+    students = malloc(max_students * sizeof(char *));
+    if (students == NULL) {
+        puts("Memory allocation failed");
+        return 1;
+    }
+    
+    while (scanf("%99s", temp) == 1) {
+        int is_unique = 1;
+        for (int i = 0; i < unique_count; i++) {
+            if (strcmp(students[i], temp) == 0) {
+                is_unique = 0;
                 break;
             }
         }
-        if (duplicate) continue;
-
-        if (size == capacity) {
-            capacity *= 2;
-            char **new_names = (char **)realloc(names, capacity * sizeof(char *));
-            if (new_names == NULL) {
-                puts("Memory allocation error");
-                for (int j = 0; j < size; j++) free(names[j]);
-                free(names);
-                return 0;
+        
+        if (is_unique) {
+            students[unique_count] = strdup(temp);
+            if (students[unique_count] == NULL) {
+                puts("Memory allocation failed");
+                for (int i = 0; i < unique_count; i++) {
+                    free(students[i]);
+                }
+                free(students);
+                return 1;
+            }
+            unique_count++;
+            if (unique_count >= max_students) {
+                break;
             }
-            names = new_names;
         }
-
-        names[size] = strdup(name);
-        if (names[size] == NULL) {
-            puts("Memory allocation error");
-            for (int j = 0; j < size; j++) free(names[j]);
-            free(names);
-            return 0;
-        }
-        size++;
     }
-
-    if (size == 0) {
+    
+    if (unique_count == 0) {
         puts("Ziadne prihlasky");
-        free(names);
-        return 0;
+        free(students);
+        return 1;
     }
-
-    qsort(names, size, sizeof(char *), compare);
-
+    
+    qsort(students, unique_count, sizeof(char *), compare);
+    
     puts("Prijati studenti:");
-    int accepted = size < max_students ? size : max_students;
-    for (int i = 0; i < accepted; i++) {
-        puts(names[i]);
+    for (int i = 0; i < unique_count; i++) {
+        puts(students[i]);
     }
-
-    if (size > max_students) {
-        puts("Neprijati studenti:");
-        for (int i = max_students; i < size; i++) {
-            puts(names[i]);
-        }
+    
+    for (int i = 0; i < unique_count; i++) {
+        free(students[i]);
     }
-
-    for (int i = 0; i < size; i++) {
-        free(names[i]);
-    }
-    free(names);
+    free(students);
+    
     return 0;
 }
 
-