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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int n = 3;
  5.  
  6. void f(int i, bool choice[]){
  7. 	if(i==n+1){
  8. 		for(int j = 1; j <= n;j++){
  9. 			if(choice[j])
  10. 				cout << j << " ";
  11. 		}
  12. 		cout << endl;
  13. 		return ;
  14.  
  15. 	}
  16.  
  17. 	choice[i] = false;
  18. 	f(i+1,choice);
  19.  
  20. 	choice[i] = true;
  21. 	f(i+1,choice);
  22.  
  23.  
  24. }
  25.  
  26. int main() {
  27. 	// your code goes here
  28. 	bool v[20];
  29. 	f(1,v);
  30. 	return 0;
  31. }
Success #stdin #stdout 0.01s 5472KB
comments (?)
stdin
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Standard input is empty
stdout
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3 
2 
2 3 
1 
1 3 
1 2 
1 2 3
https://ideone.com/IKaQtM
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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