#include<conio.h>
#include<stdio.h>
#define N 5

void main()
{
    int a[N]={0};
    int sp=-1,ch,n,i;

    clrscr();
    while(ch!=5)
    {
        printf("\n\t 1.PUSH.");
        printf("\n\t 2.POP.");
        printf("\n\t 3.DISPLAY.");
        printf("\n\t 4.PEEP A PARTICULAR VALUE.");
        printf("\n\t 5.EXIT ");
        printf("\n\t ENTER UR CHOICE :::: ");

        scanf("%d",&ch);

        if(ch==1)
        {
            if(sp>=N)
            {
                printf("\n\t STACK FULL ");
                break;
            }
            printf("\n\t ENTER DATA:::: ");
            scanf("%d",&n);
            sp++;
            a[sp]=n;
        }
        if(ch==2)
        {
            printf("\n\t POPPED VALUE ::: %d",a[sp]);
            a[sp]=0;
            sp--;
        }
        if(ch==3)
        {
            for(i=sp;i>=0;i--)
            {
                printf("\n\t %d",a[i]);
            }
        }
    }
    getch();
}