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  1. #include <iostream>
  2.  
  3. struct ManyIntegers {
  4.  
  5.     int a,b,c,d;
  6. };
  7.  
  8. int main () {
  9.  
  10.     union {
  11.         int ManyIntegers::* p;
  12.         unsigned long l;
  13.     } x;
  14.  
  15.  
  16.     x.p = &ManyIntegers::a;
  17.     std::cout << "p = &ManyIntegers::a = " << (x.l) << std::endl;
  18.  
  19.     x.p = &ManyIntegers::b;
  20.     std::cout << "p = &ManyIntegers::b = " << (x.l) << std::endl;
  21.  
  22.     x.p = &ManyIntegers::c;
  23.     std::cout << "p = &ManyIntegers::c = " << (x.l) << std::endl;
  24.  
  25.     x.p = &ManyIntegers::d;
  26.     std::cout << "p = &ManyIntegers::d = " << (x.l) << std::endl;
  27.  
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0.02s 2724KB
comments (?)
stdin 
Standard input is empty
stdout 
p = &ManyIntegers::a = 0
p = &ManyIntegers::b = 4
p = &ManyIntegers::c = 8
p = &ManyIntegers::d = 12
https://ideone.com/M64WG
language:
C++ (gcc 8.3)
created:
13 years ago
visibility:
public

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