<![CDATA[import java.util.Scanner;
public class stack {
final int max=100;
int s[]=new int[max];
int top=-1;
void push(int ele)
{
if(top>=max-1)
System.out.println("stack overflow");
else
s[++top]=ele;
}
int pop()
{
int z=0;
if(top==-1)
System.out.println("stack underflow");
else
z=s[top--];
return z;
}
void display()
{
if(top==-1)
System.out.println("stack empty");
else
{
for(int i=top;i>-1;i--)
System.out.println(s[i]+" ");
}
}
public static void main(String args[])
{
int q=1;
stack m = new stack();
System.out.println("program to perform stack operations");
Scanner sc=new Scanner(System.in);
while(q!=0)
{
System.out.println("enter 1. push 2.pop 3. display ");
System.out.println("enter your choice");
int ch=sc.nextInt();
switch(ch)
{
case 1:System.out.println("enter the element to be pushed");
int ele=sc.nextInt();
m.push(ele);
break;
case 2:int popele;
popele=m.pop();
System.out.println("the poped element is");
System.out.println(popele+" ");
break;
case 3:System.out.println("elements in the stack are");
m.display();
break;
case 4:q=0;
}
}}
}
]]>
