// Function testing shell
// Michael Rothstein
// 4/18/14
#include <iostream>

using std::cin; using std::cout; using std::endl;


#ifdef TEST

int main(){
  while(1){
    cout << "Input a number to test: ";
    double x;
    cin >> x;
    if ( x < 0 ) break;
    cout << "Output for " << x << " is " << sqrt(x) << endl;
  }
}
#endif