Program in C to perform PUSH and POP on Stack

#include<stdio.h>

#include<conio.h>

void main()

{

int S[10],MAXSTK,TOP=0,item,n,i,D;

clrscr();

do

{

printf(“Enter the size\n”);

scanf(“%d”,&n);

printf(“Enter the choice \n1-Push \n2-Pop\n3-Display”);

scanf(“%d”,&n);

switch(n)

{

case 1:

{

if(TOP==MAXSTK)

{

printf(“Overflow”);

break;

}

else

{

printf(“Enter the item you want to insert ”);

scanf(“%d”,&item);

TOP=TOP+1;

S[TOP]=item;

break;

}

}

case 2:

{

if(TOP==0)

{

printf(“Underflow”);

}

else

{

item=S[TOP];

TOP=TOP-1;

printf(“Delete the item”,item);

bbreak;

}

}

case 3:

{

for(i=TOP;i>0;i--)

{

scanf(“%d”,S[i]);

break;

}

}

printf(“Enter 4 to continue\n”);

scanf(“%d”,&D);

}

while(D==4);

getch();

}