Write a function to insert a name at the end of a linked list? (C)

I have a linked list:

struct node { char person[100]; struct node *next; }; 

int main() { struct node *new_node; new_node=malloc(sizeof(struct node)); printf("Please enter a name: "); scanf("%s", ); } 

How do I get the name from the user and write a function to add it to the end of the linked list? I'm not supposed to use the insert() library function, which is why I'm having trouble.