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  1. #include <iostream>
  2. static union {
  3. struct {unsigned short AX;} WORD;
  4. struct {unsigned char AL;unsigned char AH;} BYTE;
  5. } Regs;
  6.  
  7. int main(){
  8. using std::cout;
  9. Regs.WORD.AX=0xabcd;
  10. cout << std::hex;
  11. cout << "AX=" << Regs.WORD.AX << " AH=" << (int)Regs.BYTE.AH << " AL=" << (int)Regs.BYTE.AL << '\n';
  12.  
  13. Regs.BYTE.AH=0x12;
  14. cout << "AX=" << Regs.WORD.AX << " AH=" << (int)Regs.BYTE.AH << " AL=" << (int)Regs.BYTE.AL << '\n';
  15. }
  16.  
Success #stdin #stdout 0.01s 2680KB
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stdin
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Standard input is empty
stdout
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AX=abcd AH=ab AL=cd
AX=12cd AH=12 AL=cd
https://ideone.com/md53X
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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