This only prints -1,2,-4

What is wrong with this code, please make all code enhancements in a new c file..
It only prints -1,2-4 plus it doesn't seem to sort the incomming integer..


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

 typedef struct node
 {
      int number;
      struct node *next;
 }Node;

 void additem(int a);
 void print(void);
 Node *head=NULL;

 main()
 {
      int i=0;
      int a1[5]={-1,2,-4,67,78};
      for (i=0;i<5;i++)
      {
        additem(a1[i]);
      }
      print();
}

void additem(int a)
{
  Node *curr;
  Node *new_node;
  Node *prev;
  Node *temp;

  new_node=(Node *)malloc(sizeof(Node));
  if (new_node==NULL)
  {
       printf("I am dreadfully sorry.. You don't have enough conventional memory to add the New Node\n");
       exit(1);
  }
  new_node->next=NULL;
  new_node->number=a;
  if (head==NULL)
  {
       head=new_node;
       return;
  }

  prev=NULL;
  curr=head;
  temp=NULL;
  temp=curr->next;
  while(curr->next != NULL)
  {

       if (curr->number< new_node->number&&new_node->number>temp->number)
       {
            new_node->next=temp;
            temp=new_node;
          return;
       }
       else
       {
             curr=curr->next;
             temp=curr->next;
       }
  }
  curr->next=new_node;
  return;
}

void print(void)
{
  Node *curr;
  int i=0;

  curr=head;



      if (curr==NULL)
      {
            printf("I am sorry this is an empty list..There is no data in the list\n");
            return;
      }

      while(curr != NULL)
      {
            printf("Node: [%d] = %d\n",i,curr->number);
            i++;
            curr=curr->next;
      }
}

Please rewrite the code. with /* showing why and what you did*/