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  1. #include <iostream>
  2. #include <iomanip>
  3.  
  4. using namespace std;
  5.  
  6.  
  7. typedef struct {
  8.     int      id;
  9.     int type;
  10.     const char      *name;
  11.     const char *long_name;
  12.     int             props;
  13.     const char *const *mime_types;
  14.     const char *const *profiles;
  15. } UnPacked;
  16.  
  17. #pragma pack(4)
  18. typedef struct {
  19.     int      id;
  20.     int type;
  21.     const char      *name;
  22.     const char *long_name;
  23.     int             props;
  24.     const char *const *mime_types;
  25.     const char *const *profiles;
  26. } Packed;
  27.  
  28.  
  29. int main(int argc, const char * argv[])
  30. {
  31.     cout << "UnPacked: " << sizeof(UnPacked) << endl;
  32.     cout << "Packed  : " << sizeof(Packed)   << endl;
  33. }
  34.  
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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UnPacked: 48
Packed  : 44
https://ideone.com/JZ63aC
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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