#include <stdio.h>
#include <math.h>

int n = 20;

void output(unsigned long int* year, unsigned int* day, double* wind_t, unsigned int* rain){
    int i = 0;
    printf(" ------ ----------------- -------------\n");
    printf("| year | day | wind      | temperature |\n");
    for (i = 0; i < 20; i++){
        printf("|------+-----+--------+-------------|\n");
        printf("| %ld | %d | %f     | %d          |\n", year[i], day[i], wind_t[i], rain[i]);
    }
}

void input(unsigned long int* year, unsigned int* day, double* wind_t, unsigned int* rain){
    int i = 0;
    long int year_;
    int day_;
    double wind_t_;
    int rain_;
    for (i = 0; i < n; i++){
        printf("Input a year\n");
        while(scanf("%ld", &year_) != 1 || year_ < 1){
            printf("Error. Try again\n");
            while(getchar()!='\n');
        }
        printf("Input a day\n");
        while(scanf("%d", &day_) != 1 || day_ < 1 || day_ > 365){
            printf("Error.Try again\n");
            while(getchar()!='\n');
        }
        printf("Input a wind temperature\n");
        while(scanf("%lf", &wind_t_) != 1){
            printf("Error. Try again\n");
            while(getchar()!='\n');
        }
        printf("Input a count of precipitation\n");
        while(scanf("%d", &rain_) != 1 || rain_ < 0){
            printf("Error. Try again");
            while(getchar()!='\n');
        }
        year[i] = year_;
        day[i] = day_;
        wind_t[i] = wind_t_;
        rain[i] = rain_;
    }
    menu(year, day, wind_t,rain);
}

void exercise_1(unsigned long int* year,unsigned int* day,double* wind_t,unsigned int* rain){
    int i; long unsigned int min_id; unsigned int min = 100000000;
    for (i = 0; i < 20; i++){
        if (rain[i] < min){
            min_id = i;
            min = rain[i];
        }
    }
    printf("%ldu\n", year[min_id]);
    menu(year, day, wind_t, rain);
}

void exercise_2(unsigned long int* year,unsigned int* day,double* wind_t,unsigned int* rain){
    int i, count = 0; unsigned int year_; double control_number;
    printf("Enter year and control number:\n");
    scanf("%d %lf\n", &year_, &control_number);
    for (i = 0; i < 20; i++){
        if (year_ == year[i]){
            if (wind_t[i] > control_number * 2)
                count++;
        }
    }
    printf("%d\n", count);
    menu(year, day, wind_t, rain);
}

void exercise_3(unsigned long int* year,unsigned int* day,double* wind_t,unsigned int* rain){
    int i, count_of_days = 0, summ_of_rain = 0; unsigned int year_; double average_rain;
    printf("Enter a year:\n");
    scanf("%du", &year_);
    for (i = 0; i < 20; i++){
        if (year[i] == year_){
            summ_of_rain += rain[i];
            count_of_days++;
        }
    }
    average_rain = summ_of_rain / count_of_days;
    printf("%f\n", average_rain);
    menu(year, day, wind_t, rain);
}

int exit_(){
    return 0;
}

int menu(unsigned long int* year,unsigned int* day,double* wind_t,unsigned int* rain){
    int i = 0;
    printf("Choose your variant\n1. I want to input data\n2. I want to output all data\n3. I want to exit\n");
    while ((scanf("%i", &i) != 1 || i < 1 || i > 3)){
        printf("Error. Try again\n");
        while (getchar() !='\n');
    }
    if (i < 1 || i > 3)
        printf("You inputed incorrect number");
    else{
        if(i == 1){
            input(year,day,wind_t,rain);
        }
        else if(i == 2){
            output(year,day,wind_t,rain);
        }
        else if(i == 3){
           exit_();
        }
    }
    return 0;
}

int main()
{
    unsigned long int year[n];
    unsigned int day[n];
    double wind_t[n];
    unsigned int rain[n];
    menu(year, day, wind_t,rain );
    return 0;
}