在c++中运行此堆栈实现后，输出屏幕挂起

#include <iostream>
using namespace std;

const int MAX_SIZE = 100;

class Stack {
private:
    int top;
    int arr[MAX_SIZE];

public:
    Stack() {
        top = -1;
    }

    bool isEmpty() {
        return (top == -1);
    }

    bool isFull() {
        return (top == MAX_SIZE - 1);
    }

    void push(int data) {
        if (isFull()) {
            cout << "Stack Overflow" << endl;
        } else {
            arr[++top] = data;
        }
    }

    int pop() {
        if (isEmpty()) {
            cout << "Stack Underflow" << endl;
            return -1;
        } else {
            return arr[top--];
        }
    }

    int peek() {
        if (isEmpty()) {
            cout << "Stack is empty" << endl;
            return -1;
        } else {
            return arr[top];
        }
    }
};

int main() {
    Stack stack;
    stack.push(1);
    stack.push(2);
    stack.push(3);

    cout << "Top element: " << stack.peek() << endl;

    cout << "Popped element: " << stack.pop() << endl;
    cout << "Popped element: " << stack.pop() << endl;

    cout << "Is stack empty? " << (stack.isEmpty() ? "Yes" : "No") << endl;

    return 0;
}