#include
#include
using std::cout;
using std::cin;
using std::endl;
using std::hex;
using std::dec;
using std::oct;
using std::setbase;
int main()
{
int n;
cout << "Enter a decimal number: ";
cin >> n;
cout << n << " in hexadecimal is: "
<< hex << n << '\n'
<< dec << n << " in octal is: "
<< oct << n << '\n'
<< setbase( 10 ) << n << " in decimal is: "
<< n << endl;
return 0;
}