stackusing-array.cpp

#include<iostream>
#define MAX 10
using namespace std;

int arr[MAX];
int item;
int ch;
int top=-1;
int stackCount=0;

//push operation
void push(int stack[],int item)
{
 if(top==(MAX-1))
 cout << "Stack Overflow..." << endl;
 else
 {
 top=top+1;
 stack[top]=item;
 stackCount++;
 }
}

//pop operation
int pop(int stack[])
{
 int itemTop;
 if(top==-1)
 cout << "Stack Underflow..." << endl ;
 else
 {
 itemTop=stack[top];
 top=top-1;
 stackCount--;
 cout << "Pop item is " << itemTop << endl ;
 }
 return itemTop;
}


//display
void display(int stack[])
{
 if(top==-1)
 cout << "Stack Empty" << endl;
 else
 {
 cout << "******************" << endl;
 for(int i=top; i>=0; i--)
 {
 cout << stack[i] << endl;
 }
 cout << "*******************" << endl;
 }

}

int main()
{
 do
 {
 cout <<"Program Menu\n";
 cout <<"1. Push an Element.\n";
 cout <<"2. Pop an Element.\n";
 cout <<"3. Display Stack.\n";
 cout <<"4. Exit\n";
 cout <<"Enter your Choice:";
 cin >> ch;
 switch(ch)
 {
 case 1:
 cout << "Enter an element:";
 cin >> item;
 push(arr,item);
 break;
 case 2:
 item=pop(arr);
 cout << "Element poped " << item << endl;
 break;
 case 3:
 display(arr);
 break;
 case 4:
 exit(0);
 default:
 cout << "Invalid Choice...";
 break;
 }
 }
 while(ch!=4);
 return 0;
}