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  1. #include<iostream>
  2. #include<string>
  3. using namespace std;
  4.  
  5. void out(int n, string s) {
  6.     if (!n) {
  7.         cout << s << '\n';
  8.         return;
  9.     }
  10.     out(n - 1, s + '0');
  11.     out(n - 1, s + '1');
  12. }
  13. int main() {
  14.     int n;
  15.     cin >> n;
  16.     out(n, "");
  17.     return 0;
  18. }
  19.  
Success #stdin #stdout 0s 4268KB
comments ()
stdin 
2
stdout 
00
01
10
11
https://ideone.com/2nf3oP
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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