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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. union charBool
  5. {
  6. 	unsigned char aChar;
  7. 	bool aBool;
  8. };
  9.  
  10. int main() 
  11. {
  12. 	charBool var;
  13. 	charBool* varMemory = &var;
  14.  
  15. 	var.aBool = 65;
  16. 	std::cout << "a boolean = " << var.aBool << std::endl;
  17. 	std::cout << "a char = " << var.aChar << std::endl;
  18. 	std::cout << "varMemory = " << (*(reinterpret_cast<unsigned char*>(varMemory))) << std::endl;
  19.  
  20. 	var.aChar = 98;
  21. 	std::cout << "a boolean = " << var.aBool << std::endl;
  22. 	std::cout << "a char = " << var.aChar << std::endl;
  23. 	std::cout << "varMemory = " << (*(reinterpret_cast<unsigned char*>(varMemory))) << std::endl;
  24.  
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin
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Standard input is empty
stdout
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a boolean = 1
a char = 
varMemory = 
a boolean = 0
a char = b
varMemory = b
https://ideone.com/pDus2G
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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