int *arr; // Pointer to store the stack array. int capacity; // Maximum capacity of the stack. int topIndex; // Index of the top element in the stack. public: // Constructor to initialize the stack ...

Using an array as the underlying storage is one way to implement a stack. This approach is simple and fast, as both push and pop operations take constant time.

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To implement a stack using an array in C++, we can use an array to store the elements and keep track of the top element's index. Push operation increases the top index and inserts the element ...