Stack using C++(Struct)

 Q). Implement Stack push and pop function using struct in C++

=>Program :

#include<iostream>

#include<iomanip>

using namespace std;

#define MAX 5

typedef struct stack_node{

  int arr[MAX];

  int top;

}node;

void push(int item,node *ptr);

int pop(node *ptr);

void display(node *ptr);

int main(){

int item,choice;

char ch;

node myStack;

myStack.top=-1;

do{

    cout<<"\n************* please press below key for that option *************\n\n";

    cout<<"1.Push Value in stack \n";

    cout<<"2.Pop Value in stack \n";

    cout<<"3.Display \n";

    cin>>choice;

    switch(choice){

     case 1: cout<<"Enter the data : ";

             cin>>item;

             push(item,&myStack);

             break;

     case 2: item=pop(&myStack);

             cout<<"Pop element : "<<item<<endl;

             break;

      case 3: display(&myStack);

              break;

      default : cout<<"Wrong option selected\n";

    }

    cout<<"\nDo you want to run again (y/n) : ";

    cin>>ch;

}while(ch=='y');

}

void push(int item,node *ptr){

if(ptr->top==MAX-1){

cout<<"\nStack Over Flow \n";

}else{

ptr->top++;

ptr->arr[ptr->top]=item;

cout<<"\nStack Push at "<<ptr->top+1<<" position"<<endl;

}

}

int pop(node *ptr){

int item;

if(ptr->top==-1){

cout<<"\nStack Over Flow \n";

}else{

item=ptr->arr[ptr->top];

cout<<"\nStack Pop at "<<ptr->top+1<<" position"<<endl;

ptr->top--;

}

return item;

}

void display(node *ptr){

cout<<"\n\n ********* Stack Status **********\n\n";

for(int i=MAX;i>0;i--){

   if(ptr->top<i-1){

    cout<<setw(4)<<i<<setw(4)<<"|"<<setw(8)<<"|"<<endl;

    cout<<setw(8)<<"|"<<"_______"<<"|"<<endl;

   }else{

    cout<<setw(4)<<i<<setw(4)<<"|"<<setw(4)<<ptr->arr[i-1]<<setw(4)<<"|"<<endl;

    cout<<setw(8)<<"|"<<"_______"<<"|"<<endl;

   }

}

if(ptr->top==MAX-1){

    cout<<endl;

    cout<<setw(8)<<"  "<<"FULL"<<" "<<endl;

}

if(ptr->top==-1){

    cout<<endl;

    cout<<setw(8)<<"  "<<"EMPTY"<<" "<<endl;

}

}

=> Output : 

1. Option Sample:

  =>Full Stack Sample:

                  

=>Empty Stack Sample :