#include <cmath>
#include <cstddef>
#include <iostream>

// This program stores values in an array that has
// room for at most five entries.
//
// The first two entries are entered by the user.
// Additional entries are then calculated and added
// to the array.
//
// The variable 'capacity' records how many entries
// of the array are currently being used.
//
// Only increase the capacity of the array when a
// new entry is actually added.
//
// Find and fix any bugs.

// Function declarations
int main();

// Function definitions
int main() {
    double array[5];
    std::size_t capacity{ 0 };

    std::cout << "Enter a real number: ";
    std::cin  >> array[0];

    std::cout << "Enter a second real number: ";
    std::cin  >> array[1];

    capacity = 2;

    if ( array[0] < array[1] ) {
        array[capacity] = array[1] - array[0];
        ++capacity;
    } else if ( array[1] < array[0] ) {
        array[capacity] = array[0] - array[1];
        ++capacity;
    }

    if ( std::abs( array[0] - array[1] ) < 1 ) {
        array[capacity] = 1 - array[0] - array[1];
        ++capacity;
    }

    for ( std::size_t k{ 0 }; k < capacity; ++k ) {
        std::cout << array[k] << " ";
    }

    std::cout << std::endl;

    return 0;
}