#include <iostream>   //C++ example
#include <cstdlib>
#include <cctype>     //for isprint
#include <cmath>      //for frexp
using namespace std;

void print(int i);
void print(char c);
void print(double d);

int main(int argc, char **argv)
{
	print(atof(argv[1]));
	return EXIT_SUCCESS;
}

void print(double d)
{
	int exponent;   //uninitialized variable
	double mantissa = frexp(d, &exponent);

	cout << d << ", mantissa == " << mantissa
		<< ", exponent == " <<  exponent << "\n";

	for (size_t i = 0; i < sizeof (double); ++i) {
		cout << static_cast<unsigned>(reinterpret_cast<unsigned char *>(&d)[i])
			<< " ";
	}
	cout << "\n";

	for (size_t i = 0; i < sizeof (double) / sizeof (int); ++i) {
		cout << hex << reinterpret_cast<unsigned int *>(&d)[i] << dec
			<< " ";
	}
	cout << "\n";
}