// Code to show binary representation of a floating point number
// Author: Sanjiv K. Bhatia
// Requires an argument between 0 and 1 (a floating point number)

#include <iostream>

int main ( int argc, char ** argv )
{
    using namespace std;

    if ( argc < 2 )
    {
	cerr << "usage: " << argv[0] << " mantissa" << endl;
	return ( 1 );
    }

    int i ( 0 );
    float d = atof ( argv[1] );		// Get the number from command line

    if ( d >= 1.0 )
    {
	cerr << "Mantissa should be less than 1.0" << endl;
	return ( 1 );
    }

    while ( d > 0 && i < 23 )		// Stop after 23 bits; no exponent
    {
	if ( ( d *= 2 ) >= 1.0 )
	{
	    cout << '1';
	    d -= 1.0;
	}
	else
	    cout << '0';
	i++;
    }

    cout << endl;

    return ( 0 );
}