#include <iostream>
#include <iomanip>

using namespace std;

bool is_2 (int);
bool is_even (int);

//*******************************************************

// difference between character 2 and integer 2

int main()

{

char ch = '2';

int i = 2;

cout << ch << " is a digit: " ;
if (isdigit(ch))
  cout << "yes" << endl;
  else
  cout << "no"  << endl;

cout << i << " is a digit: " ;
if (isdigit(i))
  cout << "yes" << endl;
  else
  cout << "no"  << endl;

cout << endl;
cout << setfill('0');

cout << ch  << " = x'" << hex << setw(2) << (int) ch << "'" << dec << endl;
cout <<  i  << " = x'" << hex << setw(2) << (int)  i << "'" << dec << endl;

}
  
/*******************************************************

2 is a digit: yes
2 is a digit: no

2 = x'32'
2 = x'02'
  
*/