RAII examples

RAII.cpp

// OPTION 1
class Object
{
    private:
        int* data;
    public:
        Object(const int size)
        { 
            data = new int[size]; 
        } // Acquisition
        ~Object() 
        { 
            delete[] data; 
        } // release
};
void myFunc() 
{ 
    Object P(10);   // lifetime gets automatically associated to enclosing scope
}// automatically destroys and deallocate for P and P.data




// OPTION 2
#include <memory>
class Object
{   
    private:
        std::unique_ptr<int> data;
    public:
        Object(const int size) 
        { 
            data = std::make_unique<int>(size); 
        }
};

void myFuc() 
{   
    Object P(100);
}