#include <stdio.h>
#include <stdlib.h>
#include "hilfe.h"
#include <string.h>
double average(double arr[][3], int länge);
double minimum(double arr[][3], int länge);
int main(){

    double length[MAX_DATA];
    int n = 0;
    double input;
    char unit[2];

    //Intro
    printf(" == Length Converter ==  ");
    printf("\n\nPlease provide the number of records(max 100) you want to enter: ");
    scanf("%d", &n);


    //Fehlerhandling n<= 0
    if(n > MAX_DATA || n <= 0){
    printf("Error: Please check the number of records you want to enter\n");
    return EXIT_FAILURE;
    }

    //Dekleration von Double Array für Werte und für Meterwerte
    double records[n][3];
    double meterwerte[n];

    int i;
    for(i = 0; i < n; i++){
        printf("Entry %d : <length> <unit>\n" , i+1);
        scanf("%lf %s",&input,&unit[0]);

        // Usereingabe

        // Usereingabe (Zahl) in Tabelle Spalte 1 schreiben
        records[i][0] = input;

        // Usereingabe (String) in Tabelle Spalte 2 codiert als Double ( 0.00 = mm,..)
        // Überprüfen der Einheit und schreiben in Spalte 3 (in m)
        if(strcmp(unit, "mm") ==0){
            records[i][1] = 0;
            records[i][2] = input/1000;
        }else if(strcmp(unit, "cm") ==0){
            records[i][2] = input/100;
            records[i][1] = 1;
        }else if(strcmp(unit, "dm") ==0){
            records[i][2] = input/10;
            records[i][1] = 2;
        }else if(strcmp(unit, "km") ==0){
            records[i][2] = input * 1000;
            records[i][1] = 3;
        }
    printf("%lf m\n", records[i][2]);
    }


//  for(int i = 0; i < n; i++){
//      meterwerte[i] = records[i][2];
//  }

    puts("\n--------");
    printf("Average: %6.3lf m\n",average(records,n));
    printf("Minimum: %6.3lf m\n", minimum(records,n));
    puts("");

    return 1;
}

double average(double arr[][3], int länge){

    double ret = 0;
    int i;
    for(i = 0; i < länge; i++){
        ret += arr[i][2];
    }
    return ret /= länge;
}
double minimum(double arr[][3], int länge){

    double min = arr[0][2];

    for(int i = 1; i < länge; i++){
        if(arr[i][2] < min){
            min = arr[i][2];
        }
    }
    return min;
}