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  1. #include <iostream>
  2.  
  3. struct abcde
  4. {
  5. 	uint16_t a;
  6. 	uint8_t b;
  7. 	uint16_t c;
  8. 	uint8_t d;
  9. 	uint16_t e;
  10. };
  11.  
  12.  
  13. struct abcde_packed
  14. {
  15. 	uint16_t a;
  16. 	uint8_t b;
  17. 	uint16_t c;
  18. 	uint8_t d;
  19. 	uint16_t e;
  20. } __attribute__((packed));
  21.  
  22.  
  23.  
  24. int main() {
  25. 	abcde x;
  26. 	std::cout << sizeof(x) << "\n" << sizeof(x.a) + sizeof(x.b) + sizeof(x.c) + sizeof(x.d) + sizeof(x.e) << "\n\n";
  27.  
  28. 	abcde_packed y;
  29. 	std::cout << sizeof(y) << "\n" << sizeof(y.a) + sizeof(y.b) + sizeof(y.c) + sizeof(y.d) + sizeof(y.e) << "\n";
  30.  
  31. 	return 0;
  32. }
Success #stdin #stdout 0s 16064KB
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10
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8
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https://ideone.com/dE7KPj
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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