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  1. #include <bitset>
  2. #include <iostream>
  3. int main()
  4. {
  5.     const int sz = 15;
  6.     std::bitset<sz> b(-1);
  7.     int num = static_cast<int>(b.to_ulong());
  8.     if (b[sz-1]) {
  9.         int mask = (1<<sz)-1;
  10.         num |= ~mask;
  11.     }
  12.     std::cout << num << std::endl;
  13. }
Success #stdin #stdout 0s 3296KB
comments (?)
stdin 
Standard input is empty
stdout 
-1
https://ideone.com/djkVtt
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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