#include <iostream>

int main()
{
    bool isAccepted = false;
    bool isCapital = false;
    char charInput1 = (char)65;
    char charInput2 = (char)65;

    std::cout << "This program gets the middle letter of of 2 letters that have been input" << std::endl;
    while(isAccepted == false){
        std::cout << "Enter the first letter: ";
        std::cin >> charInput1;
        std::cout << "Enter the second letter: ";
        std::cin >> charInput2;

        if(charInput1 >= 65 && charInput2 >= 65 && charInput1 <= 90 && charInput2 <= 90)
        {
            char charAnswer = (charInput1 + charInput2) / 2;
            std::cout << "You have selected: " << charInput1 << " and " << charInput2 << ". The middle letter is: " << charAnswer << std::endl;
            isCapital = true;
            isAccepted = true;
        }
        else if(charInput1 <= 122 && charInput2 <= 122 && charInput1 >= 97 && charInput2 >= 97)
        {
            char charAnswer = (charInput1 + charInput2) / 2;
            std::cout << "You have selected: " << charInput1 << " and " << charInput2 << ". The middle letter is: " << charAnswer << std::endl;
            isAccepted = true;
        }
        else{
            std::cout << "You've had an invalid selection. Make sure you don't use a caption and a lowercase or any symbols" << std::endl;
        }
    }
    system("pause");
    return 0;
}