linked list problem

struct dList {
	char* type;
	char* point;
	int id;
	char* name;
	struct dList *next;
};
 
struct dList *dHead = (struct dList*) NULL;
struct dList *dEnd = (struct dList*) NULL;
 
struct dList* add(char* type, int id, char* point, char* name) {
	struct dList *list;
	list = (struct dList*)calloc(1, sizeof(struct dList));
	if(dlist == NULL) {
		return (struct dList*)NULL;
	} else {
		strcpy(list->type, type);
		list->id = id;
		strcpy(list->point, point);
		strcpy(list->name, name);
		return list ;
	}
}