removingDuplicates.c

#include <stdio.h>
#include <stdlib.h>

struct Node 
{
	int data;
	struct Node * next;
}*head = NULL , *last = NULL ;

struct Node * createNode(int value)
{
	struct Node * node = (struct Node *)malloc(sizeof(struct Node));
	node->data = value;
	node->next = NULL;
	return node;
}

void createLinkList(int value)
{
	struct Node * node;
	node = createNode(value);
	if(head == NULL)
	{
		head = last = node ; 
	}
	else
	{
		last->next = node ; 
		last = node;
	}
}

void removeDuplicate(struct Node *head)
{
	struct Node * current = head->next;
	while(current != NULL)
	{
		if(current->data != head->data ){
			head = current;
			current = current->next;
		}
		else{
			head->next = current->next;
			free(current);
			current = head->next;
		}
	}
}

void ShowList(struct Node * head)
{
	while(head != NULL)
	{
		printf("%d ", head->data);
		head = head->next;
	}
}

int main()
{
	int nodes,value;
	printf("Enter number of nodes :\n");
	scanf("%d", &nodes);
	printf("enter all values of list\n");
	for(int i = 0; i < nodes; i++)
	{
		scanf("%d", &value);
		createLinkList(value);
	}
	ShowList(head);
	removeDuplicate(head);
	printf("\n");
	ShowList(head);

	return 0;
}