Homework Exercise

#include <iostream>

int count;

using namespace std;

void array_input(double array[]) {

    system("cls");

    cout << "Enter the array size: ";
    cin >> count;

    if(!cin || count > 25)
      cout << "Error: Try again";
    else {
      for (size_t i = 0; i < count; i++) {
        cout << "Enter number: ";
        cin >> array[i];
      }
    }

    system("cls");
}

void array_output(double array[]) {

  system("cls");

  for (size_t i = 0; i < count; i++)
    cout << "Index: " << i << " | Value: " << array[i] << endl;

  cout << endl << endl << endl;
}

void calculate_average(double array[]) {

  system("cls");

  double sum = 0;
  int min, max, ticks = 0;

  cout << "Enter minimum range to check array: " << endl;
  cin >> min;
  cout << "Enter maximum range to check array: " << endl;
  cin >> max;


    for (size_t i = 0; i < count; i++) {
      if(array[i] >= min && array[i] <= max) {
        sum += array[i];
        ticks++;
      }
    }

    cout << "Average number: " << sum / ticks << endl << endl << endl;
}

void calculate_diff_than_zero_and_zero(double array[]) {

  system("cls");

  int zeros_count = 0, non_zeros_sum = 0;

  for (size_t i = 0; i < count; i++) {
    array[i] == 0 ? zeros_count++ : non_zeros_sum += array[i];
  }

  cout << "Zeros count in the array: " << zeros_count << " | Different than zeros sum: " << non_zeros_sum << endl << endl << endl;
}

void find_minimum_positive_number(double array[]) {

  system("cls");

  int min = array[0] >= 0 ? array[0] : 0;
  int array_index = 0;

  for (size_t i = 0; i < count; i++) {
    if(array[i] <= min && array[i] >=0) {
        min = array[i];
        array_index = i;
    }
  }

  cout << "Minimum positive integer: " << min << " | Index: " << array_index << endl << endl << endl;
}

int main() {

  double arr[5];
  int choice;

do {
  cout << "Menu:" << endl;
  cout << "1. Enter array and its size" << endl;
  cout << "2. Calculate the average of all the numbers in the array" << endl;
  cout << "3. Calculate the summary of the numbers different than zero and the count of the zero numbers" << endl;
  cout << "4. Find the minimum positive number in hte massive and his index" << endl;
  cout << "5. Show me the array" << endl;
  cout << "6. Exit" << endl << endl;

  cout << "Make your choice: ";
  cin >> choice;

  switch (choice) {
    case 1:
      array_input(arr);
      break;
    case 2:
      calculate_average(arr);
      break;
    case 3:
      calculate_diff_than_zero_and_zero(arr);
      break;
    case 4:
      find_minimum_positive_number(arr);
      break;

    case 5:
      array_output(arr);
      break;

  }
} while(choice != 6);

  return 0;
}