#include <stdio.h>

#include <stdlib.h>

int top=-1;

void push(int s[],int n,int x){

if(top<n-1){

s[++top]=x;

}

else

printf("srtack is full\n");

}

int pop(int s[],int n){

if(top==-1) {

printf("stack is empty\n");

return 0;

}

else return s[top--];

}

void display(int s[]){

int n;

n=top;

int i;

for(i=n;i>=0;i--){

printf("\n| %4d |",s[i]);

}

printf("\n--------------\n");

}

int main(){

int n,x;

printf("enter size of stack : ");

scanf("%d",&n);

int s[n];

int choise;

printf("\n\n ------------------------------------------------------\n");

printf("choise what do u whant\n");

printf("1. push \n2. pop \n3. disply \n4. exit\n");

printf("------------------------------------------------------\n");

pick :

printf("enter your choise : ");

scanf("%d",&choise);

switch(choise){

case 1:

printf("enter number you want to add in stack :");

scanf("%d",&x);

push(s,n,x);

break;

case 2:

printf("you poped : %d\n", pop(s,n));

break;

case 3:

display(s);

break;

case 4:

exit(0);

}

goto pick;

return 0;

}