#include <iostream>
#include <limits>   //for numeric_limits
#include <cstdlib>
using namespace std;

//By default, only 6 significant decimal digits of a float or double
//are output.

int main()
{
	float f {3.14159};               //6 significant digits
	int digitsFloat {numeric_limits<float>::digits10};
	cout << "A float can hold at least "
		<< digitsFloat << " significant decimal digits.\n";
	cout << "The value of f is " << f << "\n";
	cout << "A float occupies " << sizeof (float) << " byte(s).\n\n";

	double d {3.14159265358979};     //15 significant digits
	int digitsDouble {numeric_limits<double>::digits10};
	cout << "A double can hold at least "
		<< digitsDouble << " significant decimal digits.\n";
	cout << "The value of d is " << d << "\n";
	cout << "A double occupies " << sizeof (double) << " byte(s).\n";

	return EXIT_SUCCESS;
}