Variables Exercise Part 7

#include <iostream>
#include <ctype.h>

void main()
{
    char firstChar, secondChar, halfwayChar;
    std::cout << "Enter first char: ";
    std::cin >> firstChar;
    std::cout << "Enter second char: ";
    std::cin >> secondChar;
    firstChar = tolower(firstChar);
    secondChar = tolower(secondChar);
    halfwayChar = (firstChar + secondChar) / 2;
    std::cout << "The letter half way in between those is: " << halfwayChar << std::endl;
    system("pause");
}