SAMPLE INPUT OUTPUT:
MAIN MENU :
1.PUSH
2.POP
3.EXIT
ENTER YOUR CHOICE : 1
ENTER THE STACK ELEMENT : 10
10 ---->TOP
MAIN MENU :
1.PUSH
2.POP
3.EXIT
ENTER YOUR CHOICE : 1
ENTER THE STACK ELEMENT : 20
20 ---->TOP
10
MAIN MENU :
1.PUSH
2.POP
3.EXIT
ENTER YOUR CHOICE : 1
ENTER THE STACK ELEMENT : 30
STACK FULL
30 ---->TOP
20
10
MAIN MENU :
1.PUSH
2.POP
3.EXIT
ENTER YOUR CHOICE : 2
20 ---->TOP
10
MAIN MENU :
1.PUSH
2.POP
3.EXIT
ENTER YOUR CHOICE : 2
10 ---->TOP
MAIN MENU :
1.PUSH
2.POP
3.EXIT
ENTER YOUR CHOICE : 1
STACK EMPTY