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  1. #include <iostream>
  2. #include <vector>
  3. #include <cstddef>
  4.  
  5. class bitArray
  6. {
  7. private:
  8.    std::vector<int> sortie;
  9. public:
  10.    explicit bitArray(int size): sortie(size) {}
  11.    bitArray& operator+=(const std::size_t i)
  12.    {
  13.       if (0 <= i && i < sortie.size()) // check for (0 <= index < size) of the array
  14.       {
  15.             this ->sortie[i] = 1;
  16.             return *this;
  17.       }
  18.       else
  19.       {
  20.          // do your logic;
  21.          // for instance, I have done something like follows:
  22.          std::cout << "out of bound" << std::endl;
  23.          if(sortie.size() == 0) // if the size of array == 0
  24.             sortie.resize(1,0);
  25.       }
  26.       return *this;
  27.    }
  28.    int operator[] (const std::size_t index)
  29.    {
  30.       return (0 <= index && index < sortie.size()) ?  // check for (0 <= index < size) of the array
  31.                sortie[index] : -1;
  32.    }
  33. };
  34. int main ()
  35. {
  36.    bitArray obj(3);
  37.    obj += 2;
  38.    std::cout << obj[2] << std::endl;
  39.  
  40.    obj += -2;
  41.    std::cout << obj[-2] << std::endl;
  42.  
  43.    obj += 22;
  44.    std::cout << obj[22] << std::endl;
  45.  
  46.    return 0;
  47. }
  48.  
Success #stdin #stdout 0s 4484KB
comments (?)
stdin 
Standard input is empty
stdout 
1
out of bound
-1
out of bound
-1
https://ideone.com/mqDg7v
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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