// Sqrt.C
// demonstrates use of double (floating-point) numbers
// and the math library
// Presented in class on Feb 12, 1997

#include<math.h>
#include<iostream.h>

void main()
{
    double x ;
    cout << "Enter x: " ;
    cin >> x ;
    if ( x < 0.0 ) 
    {
       cout << "The square root is imaginary" << endl ;
    }
    else
    {
       cout << "The square root of "
         << x 
         << " is "
         << sqrt(x) 
         << "\n" ;
    }

}