Smart Pointers | outaink

Remembering when and where to delete those pointers after use is difficult
Deleting a pointer twice will lead to the program crash
Smart pointers: we don’t need to manually manage their allocated memory

Unique pointers

int main() {
  unique_ptr<int> x(new int);

// 更简单的创建智能指针的方法 auto y = make_unique(); auto numbers = make_unique<int[]>(10);
// 打印指针 cout << x << endl;
// 解引用 *x = 10; cout << *x << endl;
// 无法进行指针运算 return 0; }

Shared pointers

int main() {
    auto x = make_shared<int>();
    *x = 10;
 
    auto y(x);
    if (x == y) {
        cout << "Equal";
    }
 
    return 0;
}

we can have two pointers pointing to the same memory location