Tuesday, September 2, 2025

STACK USING LINKED LIST

 #include <iostream>

 using namespace std;
 struct node{
    int data;
    node*next;
 };
 class Stack{
private:
node*top;
public:
Stack(){
    top=nullptr;
}
void push(int value){
    node*New=new node();
    New->data=value;
    New->next=top;
    top=New;

}
void pop(){
    if(isEmpty()){
        cout<<"stack underflow!cannot pop "<<endl;
        return;
    }
    node*temp=top;
    cout<<temp->data<<"has been popped "<<endl;
    top=top->next;
    delete temp;
}
void peek(){
    if(isEmpty()){
        cout<<"list is empty "<<endl;
        return;
    }
    cout<<top->data<<endl;
}
bool isEmpty(){
    return top==nullptr;
}
void display(){
    if(isEmpty()){
        cout<<"stack is empty "<<endl;
        return;
    }
    node*temp=top;
    while(temp!=nullptr){
cout<<temp->data<<endl;
temp=temp->next;
    }
}

 };
 int main() {
    Stack s;
    s.push(5);
    s.push(6);
    s.push(8);
    s.push(89);
    s.push(6123);
    s.display();
 return 0;
 }

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