pvjc24/cv5/program.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define SIZE 100


struct student {
    char name[SIZE];
    int votes;
};

int read_input(int* votes, char* name, int size) {
    char line[SIZE];
    if (fgets(line, size, stdin) != NULL) {
        
        char* space = strchr(line, ' ');
        if (space != NULL) {
            *votes = atoi(line); 
            strcpy(name, space + 1);
                char* newline = strchr(name, '\n');
            if (newline)
                *newline = '\0';
            return 1; 
        }
    }
    return 0;
}



int parse_int(const char* str) {
    return atoi(str);
}


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) {
            return i; 
        }
    }
    return -1; 
}


void add_student(struct student* students, int* size, const char* name, int votes) {
    
    int index = find_student(students, *size, name);
    if (index == -1) { 
        if (*size < SIZE) { 
            strcpy(students[*size].name, name);
            students[*size].votes = votes;
            (*size)++;
        } else {
            printf("Datebase is crowded!\n");
        }
    } else { 
        students[index].votes += votes;
    }
}


int compare_students(const void* p1, const void* p2) {
    const struct student* s1 = (const struct student*)p1;
    const struct student* s2 = (const struct student*)p2;

    
    if (s1->votes != s2->votes) {
        return s2->votes - s1->votes; 
    } else {
        
        return strcmp(s1->name, s2->name);
    }
}

int main() {
    struct student database[SIZE]; 
    int size = 0; 

    int votes;
    char name[SIZE];

    
    while (read_input(&votes, name, SIZE)) {
        add_student(database, &size, name, votes); 
    }

    
    qsort(database, size, sizeof(struct student), compare_students);

    
    printf("Vysledky:\n");
    for (int i = 0; i < size; ++i) {
        printf("%d %s\n", database[i].votes, database[i].name);
    }

    return 0;
}