Code:
#include stdio.h
#include stdlib.h
struct node
{
int a;
struct node *next;
};
void generate(struct node **);
void display(struct node *);
void stack_reverse(struct node **, struct node **);
void delete(struct node **);
int main()
{
struct node *head = NULL;
generate(&head);
printf("\nThe sequence of contents in stack\n");
display(head);
printf("\nInversing the contents of the stack\n");
if (head != NULL)
{
stack_reverse(&head, &(head->next));
}
printf("\nThe contents in stack after reversal\n");
display(head);
delete(&head);
return 0;
}
void stack_reverse(struct node **head, struct node **head_next)
{
struct node *temp;
if (*head_next != NULL)
{
temp = (*head_next)->next;
(*head_next)->next = (*head);
*head = *head_next;
*head_next = temp;
stack_reverse(head, head_next);
}
}
void display(struct node *head)
{
if (head != NULL)
{
printf("%d ", head->a);
display(head->next);
}
}
void generate(struct node **head)
{
int num, i;
struct node *temp;
printf("Enter length of list: ");
scanf("%d", &num);
for (i = num; i > 0; i--)
{
temp = (struct node *)malloc(sizeof(struct node));
temp->a = i;
if (*head == NULL)
{
*head = temp;
(*head)->next = NULL;
}
else
{
temp->next = *head;
*head = temp;
}
}
}
void delete(struct node **head)
{
struct node *temp;
while (*head != NULL)
{
temp = *head;
*head = (*head)->next;
free(temp);
}
}
Output:
Enter length of list: 10
The sequence of contents in stack
1 2 3 4 5 6 7 8 9 10
Inversing the contents of the stack
The contents in stack after reversal
10 9 8 7 6 5 4 3 2 1
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