void sort(struct node *start){
	int datatemp;
	struct node *temp1,*temp2;
	temp1 = start;
	temp2 = start;	

	for(;temp1!=NULL;temp1=temp1->link){
		for(;temp2!=NULL;temp2=temp2->link){
			if(temp1<temp2){
				datatemp = temp2->data;
				temp2->data = temp1->data;
				temp1->data = datatemp;
			}
		}
	}
}