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

typedef struct elem{
	int data;
	struct elem* next;
}cell;

typedef cell* list;

void addToList(list *a,int num){
	list temp, holder;
	
	if(*a==NULL){
		*a = (list)malloc(sizeof(cell));
		(*a)->data = num;
		(*a)->next = NULL;
	}
	else{
		temp = *a;
		
		while(temp->next!=NULL)
			temp = temp->next;
		
		holder = (list)malloc(sizeof(cell));
		holder->data = num;
		holder->next = NULL;
		
		temp->next = holder;
	}
}

list copyList(list a){
	list b, tempA, tempB, temp;
	
	if(a!=NULL){
		b = (list)malloc(sizeof(cell));
		b->data = a->data;
		b->next = NULL;
		
		tempA = a->next;
		tempB = b;
		
		while(tempA!=NULL){
			temp = (list)malloc(sizeof(cell));
			temp->data = tempA->data;
			temp->next = NULL;
		
			tempB->next = temp;
			tempB = temp;
		
			tempA = tempA->next;
		}
	}
	
	return b;
}

void printList(list a){
	list temp = a;
	
	while(temp!=NULL){
		printf("%d,",temp->data);
		temp = temp->next;
	}
	printf("\b");
}

int main()
{
	list a,b;
	int i;
	
	for(i=1;i<=5;i++)
		addToList(&a,i);
	
	printf("List a is : ");
	
	printList(a);
	
	b = copyList(a);
	
	free(a);
	
	printf("\nList a destroyed, List b is : ");
	
	printList(b);
	
	return 0;
}