Programming Challenge 16.5 - Total Template

Example File: TotalTemplate.cpp

Notice: Credit for part of the code and special thanks for so kindly providing it goes to 'Ganado.'

TotalTemplate

#include <iostream>
using std::cin;
using std::cout;

#include <type_traits>
using std::conditional;

#include <typeinfo>
using std::is_same;

template <typename T>
using MyType = typename conditional<is_same<T, unsigned char>::value, int, T>::type;

/* **********************************************************
            template <class T>
    This function lets the user enter a number of values of
    different data types. The only value passed to it is the
    number of values. A running total is kept while the values
    are input, and the total is returned.
   ********************************************************** */

template <class T>
MyType<T> total(int numels)
{
    T value{};
    MyType<T> sumTotal{};
   
    for (; numels > 0; numels--)
    {
        static int count = 1;
   
        cout << "Value #" << count++ << ": ";
        cin >> value;
       
        sumTotal += value;
    }

    return sumTotal;
}

int main()
{
    int numels = 0;

    cout << "TOTAL TEMPLATE DEMO\n\n";
    cout << "This program lets you input any amount of values of\n"
          << "different types of data. For instance int, floating-point\n"
          << "and even characters. Once you finish entering your numbers\n"
          << "or characters, it calculates the total and outputs it.\n\n";

    cout << "Please the number of values you wish to input: ";
    cin >> numels;

    while (numels < 0)
    {
        cout << "Input Error: Enter a valid value!\n";
        cout << "Number of values: ";
        cin >> numels;
    }

    cout << "\nEnter " << numels << " floating-point values\n";
    cout << "\nThe total value is " << total<double>(numels) << "\n\n";

    cout << "Enter " << numels << " integer values\n";
    cout << "\nThe total value is " << total<int>(numels) << "\n\n";

    cout << "Enter " << numels << " characters\n";
    cout << "\nThe total value is " << total<unsigned char>(numels) << "\n\n";

    cout << "Thank you for trying this program! Have a nice day!";

    cin.ignore();
    cin.get();
   return 0;
}

Example Output: