In this C program we will perform Stack operations using Linked List.color>

input:

The Choice(i.e Push,Pop,Display) & The Number (integers) (i.e. for Push) (15,10,128 etc.)

output:

The Operations will be excecuted as choosen by the user.

CODE---->

#include
#include
#include
typedef struct node{
 int data;
 struct node *next;
}node;
node *top;
void push(int data)
{
 node *head,*afterhead;
 head=(node *)malloc(sizeof(node));
 if(head==NULL)
 {
  printf("\nMemory cant be allocated.");
  exit(0);
 }
 head->data=data;
 head->next=NULL;
 if(top==NULL)
  top=head;
 else
 {
  afterhead=top;
  top=head;
  head->next=afterhead;
 }
}
void pop()
{
 node *ptr;
 if(top==NULL)
 {
 
  printf("\nStack Underflow.");
  exit(0);
 }
 else
 {
  ptr=top;
  printf("\n%d is Popped from Stack.",ptr->data);
  top=top->next;
  free(ptr);
 }
}
void display()
{
 node *pos;
 if(top==NULL)
  printf("\nNo element exists.");
 else
 {
  pos=top;
  while(pos!=NULL)
  {
   printf(" %d ",pos->data);
   pos=pos->next;
  }
 }
}
void main()
{
 int choice,item;
 while(1)
 {
  printf("\n==========Menu==========\n");
  printf("\n1.Push\n2.Pop\n3.Display\n4.Exit");
  printf("\n\nEnter Your choice : ");
  scanf("%d",&choice);
  switch(choice)
  {
   case 1: printf("\nEnter data : ");
     scanf("%d",&item);
     push(item);
     break;
   case 2: pop();
     break;
   case 3: display();
     break;
   case 4: exit(0);
     break;
   default : printf("\nWrong choice.");
  }
 }
}

Download the C-Program file of this Program.

Don't just read, run on your pc !!!color>

RESULT :color>

==========Menu==========

1.Push
2.Pop
3.Display
4.Exit

Enter Your choice : 1

Enter data : 10

==========Menu==========

1.Push
2.Pop
3.Display
4.Exit

Enter Your choice : 1

Enter data : 20

==========Menu==========

1.Push
2.Pop
3.Display
4.Exit

Enter Your choice : 1

Enter data : 30

==========Menu==========

1.Push
2.Pop
3.Display
4.Exit

Enter Your choice : 3
 30  20  10
==========Menu==========

1.Push
2.Pop
3.Display
4.Exit

Enter Your choice : 2

30 is Popped from Stack.
==========Menu==========

1.Push
2.Pop
3.Display
4.Exit

Enter Your choice : 4

--------------------------------
Process exited after 23.15 seconds with return value 0
Press any key to continue . . .

Images for better understanding : color>