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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct Inst
  5. {
  6. 	int num1;
  7. 	int num2;
  8. 	int num3;
  9. };
  10.  
  11. int bitCpy(int &field, int b, int c, int d)
  12. {
  13.     int range = d - c;
  14.     b <<= (32 - d);
  15.     b >>= (32 - range);
  16.     field = b; // a.num1, a.num2, a.num3 ... etc
  17.     return b;
  18. }
  19.  
  20. int main()
  21. {
  22. 	Inst i = {};
  23. 	bitCpy(i.num1, 12345, 0, 31);
  24. 	bitCpy(i.num2, 67890, 0, 31);
  25. 	cout << i.num1 << endl;
  26. 	cout << i.num2 << endl;
  27. 	return 0;
  28. }
Success #stdin #stdout 0s 4404KB
comments (?)
stdin 
Standard input is empty
stdout 
12345
67890
https://ideone.com/cGrRUV
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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