print_pyramid.cpp

#include <iostream>
#include <string>

int main()
{
        int n;

        std::cout << "Height: ";
        std::cin >> n;

        std::string s(2 * n, ' ');

        for (int i = n - 1; i >= 0; --i)
        {
                s[i] = s[2 * n - i - 1] = '*';
                std::cout << s << std::endl;
        }
}