1   // Fig. 18.8: fig18_08.cpp
2   // An example of a union 
3   #include <iostream.h>
4   
5   union Number {
6      int x;
7      float y;
8   };
9   
10  int main()
11  {
12     Number value;
13  
14     value.x = 100;
15     cout << "Put a value in the integer member\n"
16          << "and print both members.\nint:   " 
17          << value.x << "\nfloat: " << value.y << "\n\n";
18  
19     value.y = 100.0;
20     cout << "Put a value in the floating member\n" 
21          << "and print both members.\nint:   " 
22          << value.x << "\nfloat: " << value.y << endl;
23     return 0;
24  }