125446

du4/program.c

@@ -9,20 +9,21 @@ struct student {
     int votes;
 };
 
-int find_student(struct student* students, int size, const char* name) {
-    for (int i = 0; i < size; i++) {
-        if (strcmp(students[i].name, name) == 0) {
+int najdi_studenta(struct student databaza[], int pocet, char meno[]) {
+    int i;
+    for (i = 0; i < pocet; i++) {
+        if (strcmp(databaza[i].name, meno) == 0) {
             return i;
         }
     }
     return -1;
 }
 
-int compare(const void* p1, const void* p2) {
-    struct student* s1 = (struct student*)p1;
-    struct student* s2 = (struct student*)p2;
+int porovnaj(const void *a, const void *b) {
+    struct student *s1 = (struct student *)a;
+    struct student *s2 = (struct student *)b;
 
-    if (s2->votes != s1->votes) {
+    if (s1->votes != s2->votes) {
         return s2->votes - s1->votes;
     }
 
@@ -31,59 +32,62 @@ int compare(const void* p1, const void* p2) {
 
 int main() {
     struct student databaza[SIZE];
+    int pocet_studentov = 0;
+    int valid_input = 0;
+
     memset(databaza, 0, SIZE * sizeof(struct student));
-    int size = 0;
-    int any_valid_input = 0;
 
-    char line[SIZE];
+    char riadok[SIZE];
+    char meno[SIZE];
+    int hlasy;
 
-    while (fgets(line, SIZE, stdin) != NULL);
-        char* newline = strchr(line, '\n');
-        if (newline) *newline = '\0';
+    while (fgets(riadok, SIZE, stdin) != NULL) {
+        int dlzka = strlen(riadok);
+        if (dlzka > 0 && riadok[dlzka-1] == '\n') {
+            riadok[dlzka-1] = '\0';
+        }
 
-        char* end = NULL;
-        int value = strtol(line, &end, 10);
+        char *koniec;
+        hlasy = strtol(riadok, &koniec, 10);
 
-        if (value <= 0) {
+        if (hlasy <= 0) {
             break;
         }
 
-        if (*end != ' ') {
+        if (*koniec != ' ') {
             break;
         }
 
-        char* zaciatok_mena = end + 1;
-        int velkost_mena = strlen(zaciatok_mena);
+        char *meno_start = koniec + 1;
 
-        if (velkost_mena <= 0) {
+        if (strlen(meno_start) == 0) {
             break;
         }
 
-        char name[SIZE];
-        memset(name, 0, SIZE);
-        memcpy(name, zaciatok_mena, velkost_mena);
+        strcpy(meno, meno_start);
 
-        int id = find_student(databaza, size, name);
+        int pozicia = najdi_studenta(databaza, pocet_studentov, meno);
 
-        if (id < 0) {
-            strcpy(databaza[size].name, name);
-            databaza[size].votes = value;
-            size++;
+        if (pozicia == -1) {
+            strcpy(databaza[pocet_studentov].name, meno);
+            databaza[pocet_studentov].votes = hlasy;
+            pocet_studentov++;
         } else {
-            databaza[id].votes += value;
+            databaza[pozicia].votes += hlasy;
         }
 
-        any_valid_input = 1;
+        valid_input = 1;
     }
 
-    if (!any_valid_input) {
+    if (!valid_input) {
         printf("Chyba: Nepodarilo sa načítať žiadny platný záznam.\n");
         return 1;
     }
-    qsort(databaza, size, sizeof(struct student), compare);
+    qsort(databaza, pocet_studentov, sizeof(struct student), porovnaj);
 
     printf("Vysledky:\n");
-    for (int i = 0; i < size; i++) {
+    int i;
+    for (i = 0; i < pocet_studentov; i++) {
         printf("%d %s\n", databaza[i].votes, databaza[i].name);
     }