pvjc24/cv5/program.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#define SIZE 100
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#define MAX_NAME_LENGTH 20
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// Definícia štruktúry pre uloženie jednej položky databázy
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struct student {
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char name[MAX_NAME_LENGTH];
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int votes;
};
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// Funkcia pre porovnanie dvoch záznamov študentov
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int compare(const void *p1, const void *p2) {
const struct student *s1 = (const struct student *)p1;
const struct student *s2 = (const struct student *)p2;
// Porovnanie počtu hlasov
if (s1->votes != s2->votes) {
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return s2->votes - s1->votes; // Zoradenie zostupne podľa počtu hlasov
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} else {
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// Ak majú rovnaký počet hlasov, zoradíme lexikograficky podľa mena
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return strcmp(s1->name, s2->name);
}
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}
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// Funkcia na vyhľadanie študenta v databáze
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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) {
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return i; // Študent nájdený
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}
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}
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return -1; // Študent nenájdený
}
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int main() {
struct student database[SIZE];
memset(database, 0, SIZE * sizeof(struct student));
int size = 0;
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// Zadefinovaný vstup mien a počtu hlasov
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char input[][MAX_NAME_LENGTH + 5] = {
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"2 Bardos Mrtakrys",
"1 Rita Umhi",
"1 Prylenn Alak",
"10 Lak'hi Elavorg",
"3 Prylenn Alak",
"3 Prylenn Alak",
"3 Prylenn Alak",
"1 Rita Umhi"
};
int input_size = sizeof(input) / sizeof(input[0]);
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// Spracovanie vstupu
for (int i = 0; i < input_size; i++) {
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char name[MAX_NAME_LENGTH];
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int votes;
sscanf(input[i], "%d %s", &votes, name);
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int idx = find_student(database, size, name);
if (idx == -1) {
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// Študent nie je v databáze, pridáme ho
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if (size >= SIZE) {
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fprintf(stderr, "Prekročený limit databázy\n");
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return 1;
}
strcpy(database[size].name, name);
database[size].votes = votes;
size++;
} else {
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// Študent je v databáze, pripočítame hlasy
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database[idx].votes += votes;
}
}
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// Zoradenie databázy
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qsort(database, size, sizeof(struct student), compare);
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// Výpis databázy
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for (int i = 0; i < size; i++) {
printf("%d %s\n", database[i].votes, database[i].name);
}
return 0;
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}