//---------------------------------------------------
// Purpose: Calculate path of cannon ball
// Author:  John Gauch
//---------------------------------------------------
#include <iostream>
#include <cmath>
using namespace std;

int main()
{
   // Declare variables
   float X = 0;
   float Y = 0;
   float Vx = 0;
   float Vy = 0;
   float Ax = 0;
   float Ay = -9.8;

   // Get initial velocity of cannon ball
   cout << "Enter cannon ball velocity (Vx Vy): ";
   cin >> Vx >> Vy;

   // Loop calculating cannon ball location
   for (int second = 0; (second < 100) && (Y >= 0); second++)
   {
      // Print location
      cout << " t: " << second
           << " x: " << X 
           << " y: " << Y << endl;

      // Update location
      X = X + Vx;
      Y = Y + Vy;

      // Update velocity
      Vx = Vx + Ax;
      Vy = Vy + Ay;
   }
}