ex07.cpp

#include <iostream>

const int Max = 5;

double *fill_array(double *ar, int limit);
void show_array(const double *ar, double *end);
void revalue(double r, double *ar, double *end);

int main()
{
    using namespace std;
    double properties[Max];
    double *end = fill_array(properties, Max); 
    show_array(properties, end); 
    if (end > 0) {
        cout << "Enter revaluation factor: "; 
        double factor; 
        while (!(cin >> factor))
        { 
            cin.clear(); 
            while (cin.get() != '\n') 
                continue; 
            cout << "Bad input; Please enter a number: "; 
        }
    revalue(factor, properties, end); 
    show_array(properties, end); 
    } 
    cout << "Done.\n"; 
    cin.get(); 
    cin.get(); 
    return 0;
}

double *fill_array(double *ar, int limit) 
{
    using namespace std; 
    double temp; 
    int i; 
    for (i = 0; i < limit; i++) 
    {
        cout << "Enter value #" << (i + 1) << ": "; 
        cin >> temp; 
        if (!cin)
        {
            cin.clear();
            while (cin.get() != '\n')
                continue;
            cout << "Bad input; input process terminated.\n";
            break;
        }
        else if (temp < 0)
            break;
        *(ar + i) = temp;
    } 
    return (ar + i);
}

void show_array(const double *ar, double *end) 
{ 
    using namespace std; 
    const double *temp = ar;
    for (int i = 0; temp < end; i++, temp++) 
    { 
        cout << "Property #" << (i + 1) << ": $"; 
        cout << *temp << endl; 
    } 
}

void revalue(double r, double *ar, double *end) 
{ 
    double *temp = ar;
    for (int i = 0; temp < end; i++, temp++)
        *temp *= r;
}