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  1. #include <bitset>
  2. #include <iostream>
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     bitset<4> v1(4);
  8.     int res = v1.to_ulong();
  9.     cout << res << "\n";
  10.     res -= 1;
  11.     v1 = bitset<4>(res);
  12.     cout << v1.to_ulong() << "\n";
  13.     return 0;
  14. }
Success #stdin #stdout 0.01s 2724KB
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stdin
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Standard input is empty
stdout
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4
3
https://ideone.com/whK8kw
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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