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  1. #include <iostream>
  2.  
  3. #pragma pack(push, 1)
  4. struct A
  5. {
  6.     int a;
  7.     char b;
  8. };
  9. #pragma pack(pop)
  10.  
  11. struct B : public A
  12. {
  13.     int c;
  14. };
  15.  
  16. int main()
  17. {
  18.     std::cout << "Size of A:  " << sizeof(A) << std::endl;
  19.     std::cout << "Size of B:  " << sizeof(B) << std::endl;
  20.     return 0;
  21. }
Success #stdin #stdout 0.02s 2680KB
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stdin
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Standard input is empty
stdout
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Size of A:  5
Size of B:  12
https://ideone.com/cZa3V
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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