Why my functions doesn't work?

[JonathanSimo]

void createList()
{
	struct node *ptr, *tmp;
	int classList, i, head;


	head = (struct node *)malloc(sizeof(struct node));


	if(head == NULL)
	{
	    printf("Unable to locate list.");
	    exit(0);
	}


	printf("Enter total number of list: \n",);
	scanf("%d", &classList);


	head -> classList;
	head -> next = NULL;
	tmp = head;


	for(i=2; i<=n; i++)
	{
	    printf("Unable to allocate memory");
	    exit(0);
	}


	printf("Enter total number of list %d:", i);
	scanf("%d", &classList);


	ptr -> studentData = classList;
	ptr -> next = NULL;
	tmp -> next = ptr;
	tmp = tmp -> next;


}

[stahta01]

Why did you declare head to be a int?

Tim S.

[laserlight]

Compile at a high warning level and pay attention to warnings.

I notice that you aren't following my suggestion of separation of concerns by having an appendNode function. Furthermore, creareList needs to either return a node or change the head node by reference, otherwise you would need head to be a global variable, which is not a good idea.