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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. #define SHOW_SIZE_ALIGNMENT(T) ( std::cout << "type: " << #T << "  size: " \
  5.           << sizeof(T) << "  alignment: " << std::alignment_of<T>::value << '\n' )
  6.  
  7. int main()
  8. {
  9.     SHOW_SIZE_ALIGNMENT(double) ;
  10.     SHOW_SIZE_ALIGNMENT(long double) ;
  11. }
  12.  
Success #stdin #stdout 0s 2896KB
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stdin
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Standard input is empty
stdout
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type: double  size: 8  alignment: 8
type: long double  size: 12  alignment: 4
https://ideone.com/dPK32Z
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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