Linked list help

Hello, I'm having a problem with inserting into a linked list... It seems when I'm trying to insert something into the head I get a runtime error. I assumed that I would be safe from the runtime error because the || statement is supposed to be short circuit evaluated. I'll bold the part I'm talking about.

Code:

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#include <stdio.h>
struct node{
      int data;     
      struct node* next; 
};

void insert(struct node** head, int data);
void printlist(struct node* head);

int main(void)
{
    int choice;
    int data;
    struct node* head; // our LL.
   
    do
    {
          printf("Your choices: \n");
          printf("(1) Add to list \n");
          printf("(2) Print list \n");
          printf("(0) quit \n");
          scanf("%d",&choice);
         
          if (choice == 1)
          {
              printf("What data would you like to insert?\n");
              scanf("%d",&data);
              insert(&head,data);     
          }
          if (choice == 2)
          {
              printlist(head);       
          }
         
    }  while (choice != 0);
    printf("Goodbye\n");
    system("PAUSE");
}

//Inserts in order from smallest to largest
void insert(struct node** head, int data)
{
    struct node* current;
    struct node* temp;
   
   
    //If inserting into the beginning of the list
    if (*head == NULL || (*head)->data > data)
    {
        temp = malloc(sizeof(struct node));
        temp->data = data;
        temp->next = *head;
        *head = temp;
        return;
    }
   

    //Traverse list to find the spot we're in
    current = *head;
    while (current->next != NULL && current->next->data < data)
    {
      current = current->next;
    }
   
    //Insert in middle or the end
    temp = malloc(sizeof(struct node));
    temp->data = data;
    temp->next = current->next;
    current->next = temp;
    return;

}

void printlist(struct node* head)
{
    struct node* current;
    current = head;
    while (current->next != NULL)
    {
          printf("%d",current->data);         
          current = current->next;
    }   
}

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I must be doing something wrong. Thanks for the help everyone.

your head pointer is not initialized - so it contains garbage

I appreciate you pointing that out

thanks