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Added program of Stack using linked list #41

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Merged
IIdroyII merged 1 commit into from
Oct 24, 2021
Merged

Added program of Stack using linked list #41

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106 changes: 106 additions & 0 deletions Stack using linked list.c
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Original file line number Diff line number Diff line change
@@ -0,0 +1,106 @@
#include <stdio.h>
#include <stdlib.h>

struct Node
{
int data;
struct Node *next;
};

struct Node *head = NULL;

void push(int value)
{
struct Node *n = (struct Node *)malloc(sizeof(struct Node *));
if (head == NULL)
{
head = n;
n->data = value;
n->next = NULL;
return;
}

n->next = head;
n->data = value;
head = n;
}

void pop()
{
struct Node *temp = head;
if (head == NULL)
{
printf("\nStack is empty.\n");
return;
}

head = head->next;
temp->next = NULL;
}

void peek()
{
if (head == NULL)
{
printf("\nStack is empty.\n");
return;
}

printf("The top element is: %d\n", head->data);
}

void display()
{
struct Node *temp = head;
if (head == NULL)
{
printf("\nStack is empty.\n");
return;
}
printf("\nElements of stack are:\n");
while (temp != NULL)
{
printf("%d\n", temp->data);
temp = temp->next;
}
}

int main()
{
while (1)
{
printf("\n=======Menu=======\n");
printf("1. Push\n");
printf("2. Pop\n");
printf("3. Peek\n");
printf("4. Display\n");
printf("5. Exit\n\n");
int c, n;
scanf("%d", &c);
switch (c)
{
case 1:
printf("Enter the element to be inserted: ");
scanf("%d", &n);
push(n);
break;
case 2:
pop();
break;
case 3:
peek();
break;
case 4:
display();
break;
case 5:
exit(0);
break;

default:
printf("Please select a valid option.");
}
}

return 0;
}