#include <iostream>
#include <cstdlib>
//#include <iterator>  //for class ostream_iterator
//#include <algorithm> //for the fill and copy algorithms
#include <chrono>      //for the function std::chrono::milliseconds
#include <thread>      //for the function std::this_thread::sleep_for
using namespace std;

int main()
{
        char a[70];
        int n {size(a)};   //the number of elements in the array

        //Fill up the array with spaces.
        for (char *p {a}; p < a+n; ++p) {
               *p = ' ';
        }
        //fill(begin(a), end(a), ' ');   //Easier way to do the same thing.

	//During each iteration of this loop, the ++p makes us
	//redraw the rocket one character farther to the right.

        for (char *p {a}; p <= a+n-3; ++p) {
                p[0] = '.';        //trailing puff of smoke
                p[1] = '=';
                p[2] = '=';
                p[3] = '>';        //the nose cone

		cout << "\033[2J"; //Clear the screen.
                cout << "\033[H";  //Home the cursor.

                //Output the array onto the top line of the screen.
                for (char *q {a}; q < a + n; ++q) {
                        cout << *q;
                }

		//Easier way to do the same thing:
		//copy(begin(a), end(a), ostream_iterator<char>(cout));

		cout << flush;   //Flush the output buffer for smooth animation.

		//Sleep for 250 milliseconds (a quarter of a second).
		this_thread::sleep_for(chrono::milliseconds(250));
        }

	cout << "\n";   //Go down one line.
        return EXIT_SUCCESS;
}