Untitled

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

struct node {
  int value;
  struct node *next;
};

struct node *head;

struct node *create_node(int value){
  struct node *n = (struct node*)malloc(sizeof(struct node));
  n->next = NULL;
  n->value = value;
  return n;
}

int insert_node(int value){
  struct node *n;
  for(n = head; n != NULL; n = n->next){
    if(n->value == value) break;
    if(n->next == NULL){
       n->next = create_node(value);
       break;
     }
  }
}

int print(){
  struct node *n = head;
  while(n->next != NULL){
    n = n->next;
    printf("%d\n", n->value);
  }
}

int main(void){
  srand((unsigned)time(NULL));
  int i = 0;
  int LIMIT = 10;
  int RANGE = 100;
  head = create_node(0);
  while(i<LIMIT){
    insert_node(rand()%RANGE+1);
    i++;
  }
  print();
  return 0;
}