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  1.  
  2. #include <iostream>
  3.  
  4. using namespace std;
  5.  
  6. union c
  7. {
  8.     int i;
  9.     char c;
  10. };
  11.  
  12. void out(c u)
  13. {
  14.     for(int i = 0; i < sizeof(u); ++i)
  15.     {
  16.         printf("0x%02X ",*((unsigned char*)&u+i));
  17.     }
  18.     puts("");
  19. }
  20.  
  21. int main()
  22. {
  23.     c un;
  24.     out(un);
  25.     un.i = 6;
  26.     out(un);
  27.     un.c = '4';
  28.     out(un);
  29. }
  30.  
Success #stdin #stdout 0s 4376KB
comments (?)
stdin 
Standard input is empty
stdout 
0x00 0x00 0x00 0x00 
0x06 0x00 0x00 0x00 
0x34 0x00 0x00 0x00
https://ideone.com/tUFgBX
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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