c++ - Can I convert an array in such a way to Pointer and return a pointer to a constant? -


can convert array in such way pointer , return pointer constant ? right in terms of memory allocation ?

const int* convert_vector_to_pointer(std::vector<std::pair<int, int> >& v) {     std::vector<std::pair<int, int> >::iterator = v.begin();     int* = new int[2*v.size()];     int = 0;     for(; != v.end(); ++it)     {         if(i < 2*v.size())         {             a[i] = (*it).first;             a[i + 1] = (*it).first;             += 2;         }     }     const int* b = const_cast<const int*>(a);     return b; }

the problem function allocate array within function , return const pointer it. either 1 fine, means calling code going tasked deleteing const object, , that's undefined behavior. no example not right.


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