5.4.5.Using hex, oct, dec and setbase stream manipulators.
#include <iostream>
#include <iomanip> using namespace std; 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;