#define STACK_MAX 100 class Stack { private: int data[STACK_MAX]; int size; public: Stack() { // Constructor size = 0; } ~Stack() { } // Destructor int Top() { if (size == 0) { fprintf(stderr, "Error: stack empty\n"); return -1; } return data[size-1]; } void Push(int d) { if (size < STACK_MAX) data[size++] = d; else fprintf(stderr, "Error: stack full\n"); } void Pop() { if (size == 0) fprintf(stderr, "Error: stack empty\n"); else size--; } };