#include <stdio.h>
#include <stdbool.h>
#define MALE false
#define FEMALE true

typedef struct {
    int year;
    int month;
    int date;
} DATE;

typedef struct {
    int ID;
    char name[21];
    bool sex;
    DATE birthday;
    double score;
} STUDENT;

double getAvg(STUDENT students[], int size) {
    double sum = 0;
    int i = 0;
    for (i = 0; i < size; i++) {
        sum += students[i].score;
    }
    sum /= size;
    return sum;
}

void sortStu(STUDENT students[], int size) {
    bool moved = false;
    int i = 0;
    STUDENT tmp;
    do {
        moved = false;
        for (i = 0; i < size - 1; i++) {
            if (students[i].score < students[i + 1].score) {
                tmp = students[i];
                students[i] = students[i+1];
                students[i+1] = tmp;
                moved = true;
            }
        }
    } while (moved);
    for (i = 0; i < size; i++) {
        printf("%s: %lf\n", students[i].name, students[i].score);
    }
}

int main() {
    STUDENT students[10];
    int i = 0;
    // freopen("fakedata","r",stdin);
    for (i = 0; i < 10; i++) {
        printf("ID: ");
        scanf("%d", &students[i].ID);
        printf("Name(max 20 char): ");
        scanf("%20s", students[i].name);
        printf("Sex: (MALE-0/FEMLE-1)");
        scanf("%d", &students[i].sex);
        printf("Birthday (Year/Month/Date):");
        scanf("%d/%d/%d", &students[i].birthday.year, &students[i].birthday.month, &students[i].birthday.date);
        printf("Scores:\n");
        scanf("%lf", &students[i].score);   
    }
    printf("The Average is: %lf\n", getAvg(students, 10));
    printf("Sort result:\n");
    sortStu(students, 10);
    return 0;
}