funguje

cv5/program.c

@@ -2,81 +2,72 @@
 #include <stdlib.h>
 #include <string.h>
 
-#define MAX_STUDENTS 100
 #define MAX_NAME_LENGTH 100
+#define MAX_BUFFER_LENGTH 256
 
-// Structure to hold student information (name and votes)
+// Štruktúra pre uchovanie informácií o študentovi
 typedef struct {
-    char name[100];
+    char name[MAX_NAME_LENGTH];
     int votes;
 } Student;
 
-// Function to compare two students based on their votes and names
+// Porovnávacia funkcia pre zoradenie študentov podľa počtu hlasov a mena
 int compare_students(const void *a, const void *b) {
-    const Student *student1 = (const Student *)a;
-    const Student *student2 = (const Student *)b;
+    const Student *student_a = (const Student *)a;
+    const Student *student_b = (const Student *)b;
 
-    // Sort by number of votes in descending order
-    if (student1->votes != student2->votes) {
-        return student2->votes - student1->votes;
-    } else {
-        // If votes are equal, sort lexicographically by name
-        return strcmp(student1->name, student2->name);
+    // Najprv porovnajte počet hlasov
+    if (student_a->votes != student_b->votes) {
+        return student_b->votes - student_a->votes; // Zoradiť zostupne
     }
+
+    // Ak majú rovnaký počet hlasov, porovnajte podľa mena
+    return strcmp(student_a->name, student_b->name);
 }
 
 int main() {
-    char line[256];
-    Student students[100];
-    int total_students = 0;
+    // Inicializácia poľa študentov
+    Student students[MAX_BUFFER_LENGTH];
+    int num_students = 0;
 
-    // Read votes from standard input
-    while (fgets(line, sizeof(line), stdin)) {
+    // Načítanie hlasov zo štandardného vstupu
+    char buffer[MAX_BUFFER_LENGTH];
+    while (fgets(buffer, sizeof(buffer), stdin) != NULL) {
+        // Načítajte počet hlasov a meno študenta
         int votes;
-        char name[100];
-        
-        // Parse votes and name from input line
-        if (sscanf(line, "%d %99[^\n]", &votes, name) != 2) {
-            fprintf(stderr, "Error: Invalid input format.\n");
+        char name[MAX_NAME_LENGTH];
+        if (sscanf(buffer, "%d %99[^\n]", &votes, name) != 2) {
+            fprintf(stderr, "Chyba: Neplatný formát vstupu.\n");
             return 1;
         }
-        // Check if the votes are positive
-        if (votes <= 0) {
-            fprintf(stderr, "Error: Invalid number of votes.\n");
-            return 1;
-        }
-        // Find if the student is already in the list
-        int found = 0;
-        for (int i = 0; i < total_students; i++) {
-            if (strcmp(students[i].name, name) == 0) {
-                students[i].votes += votes;
-                found = 1;
-                break;
-            }
-        }
 
-        // If student not found, add to the list
-        if (!found) {
-            if (total_students >= MAX_STUDENTS) {
-                fprintf(stderr, "Error: Too many students.\n");
-                return 1;
-            }
-            strcpy(students[total_students].name, name);
-            students[total_students].votes = votes;
-            total_students++;
+        // Uložte študenta do poľa
+        strncpy(students[num_students].name, name, MAX_NAME_LENGTH);
+        students[num_students].votes = votes;
+        num_students++;
+
+        // Kontrola prekročenia maximálnej veľkosti poľa študentov
+        if (num_students >= MAX_BUFFER_LENGTH) {
+            fprintf(stderr, "Chyba: Príliš veľa študentov.\n");
+            return 1;
         }
     }
 
-    // Sort the list of students based on votes and names
-    qsort(students, total_students, sizeof(Student), compare_students);
+    // Ak neboli načítané žiadne dáta, vypíšte chybovú správu
+    if (num_students == 0) {
+        fprintf(stderr, "Chyba: Žiadne záznamy načítané.\n");
+        return 1;
+    }
 
-    // Print the outcome
-    printf("Results:\n");
-    for (int i = 0; i < total_students; i++) {
+    // Zoradenie študentov podľa počtu hlasov a mena
+    qsort(students, num_students, sizeof(Student), compare_students);
+
+    // Výpis výsledkov
+    printf("Vysledky:\n");
+    for (int i = 0; i < num_students; i++) {
         printf("%d %s\n", students[i].votes, students[i].name);
     }
 
-
     return 0;
 }