ex07.cpp

#include <iostream>

template <typename T>
void ShowArray(T arr[], int n);

template <typename T>
void ShowArray(T * arr[], int n);

template <typename T>
double SumArray(T arr[], int n);

template <typename T>
double SumArray(T * arr[], int n);

struct debts
{
    char name[50];
    double amount;
};

int main()
{
    using namespace std;
    int things[6] = {13, 31, 103, 301, 310, 130};
    struct debts mr_E[3] =
    {
        {"Ima Wolfe", 2400.0},
        {"Ura Foxe", 1300.0},
        {"Iby Stout", 1800.0}
    };
    double * pd[3];

    for (int i = 0; i < 3; i++)
        pd[i] = &mr_E[i].amount;

    cout << "Listing Mr. E's counts of things:\n";
    ShowArray(things, 6);
    cout << "Total things:\n";
    cout << SumArray(things, 6) << endl;

    cout << "\nListing Mr. E's debts:\n";
    ShowArray(pd, 3);
    cout << "Total debts:\n";
    cout << SumArray(pd, 3) << endl;

    return 0;
}

template <typename T>
void ShowArray(T arr[], int n)
{
    using namespace std;
    cout << "template A\n";
    for (int i = 0; i < n; i++)
        cout << arr[i] << ' ';
    cout << endl;
}

template <typename T>
void ShowArray(T * arr[], int n)
{
    using namespace std;
    cout << "template B\n";
    for (int i = 0; i < n; i++)
        cout << *arr[i] << ' ';
    cout << endl;
}

template <typename T>
double SumArray(T arr[], int n)
{
    using namespace std;
    double sum = 0;
    for (int i = 0; i < n; i++)
        sum += arr[i];
    return sum;
}

template <typename T>
double SumArray(T * arr[], int n)
{
    using namespace std;
    double sum = 0;
    for (int i = 0; i < n; i++)
        sum += *arr[i];
    return sum;
}