to determine if two two doubles are equal, we check to see if
their absolute difference is very close to zero. . .if two numbers
are less than .00001 apart, theyre equal.
keep a count field in each record (as you did in p5).
once the list is complete, ask the user to see if an element
is on the list--read her/his input from the keyboard.
here is what i got

code
#include "ll.h"
#include <stdio.h>
int main() {
int info;
lnode * head ;
head = getlist();
if (find(10, head)) fprintf("%d is on the list\n",10);
else fprintf("%d is not on the list\n",10);
if (find(178, head)) fprintf("%d is on the list\n",178);
printlist(head);
return 0;
}

also have a ll.h a makefile and a input file. but im just not understanding the program and how to start it.

Can you compile the code?

Homework?
Did you compile it? Does it have execute permissions (if needed)? What exactly aren't you understanding? Where did you get that code from?