//Solution to hw4.cpp
//Created by Dr. Ramsey

#include <iostream>
using namespace std;



int main()
{
  float a,v,t; //acceleration, velocity and time
  cout << "Input floating point velocity in ft/s: ";
  cin >> v;
  cout << "Input floating point acceleration in ft/(s*s): ";
  cin >> a;
  cout << "Input floating point time in s: ";
  cin >> t;
  while(t < 0) // bad t
    {
      cout << "ERROR time is negative" << endl;
      cout << "Input positive time in s: ";
      cin >> t; //get a good t.
    } 
  double s = (v*t) + (0.5 * a * t * t); //compute distance
  cout << "The distance is " << s << " feet." << endl;
}