Newbie question on unions

From: patleonard (cppman_at_ptd.net)
Date: 10/11/04 

Date: Sun, 10 Oct 2004 21:04:50 -0400

The following code produces this output:

Characters: XY
Integer: 22872

Where does the integer 22872 come from?

#include <iostream.h>

int main()
{
 union test_union{
  short int i;
  char ch[2];
 } unvar;

 unvar.ch[0] = 'X';
 unvar.ch[1] = 'Y';

 cout << "Characters: " << unvar.ch[0] << unvar.ch[1] << '\n';
 cout << "Integer: " << unvar.i << '\n';

 return 0;
}

It may be a stupid question, but I don't know the answer. Any response will
be helpful, thank you.

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