// Allows us to see what happens when we input data to divide by
// zero and take the square root of a negative number.  These run-time
// errors may be handled differently by different compilers.

#include<iostream.h>
#include<cmath>

void main() {

  int a,b;
  double x,y,z;

  cout << "Enter 2 integers: ";
  cin >> a >> b;
  x = 1./(a-b); 
  cout << "1/(" << a << " - " << b << ") = " << x << endl;
  cout << "Enter a real number: ";
  cin >> y;
  z = sqrt(y);
  cout << "The square root of " << y << " is " << z << endl;
}