Insertion & Deletion in a Sorted Linked List

#include <stdio.h>
#include <stdlib.h>
struct node{
        int data;
        struct node* next;
} *head = NULL;
int display(){
    if(!head)   printf("Linked List is empty!");
    else{
        struct node* help = head;
        printf("| %d |-->",help);
        while (help != NULL){
            printf("| %d | %d |-->", help->data, help->next);
            help = help -> next;
        }
    }
}
void insert(int value){
    struct node *newNode = (struct node*) malloc(sizeof(struct node*));//Create space for new node
    newNode->data = value;
    if(!head || value <= head->data){ //Inserting in the front
        if(head) newNode->next = head;
        else newNode->next = NULL;
        head = newNode;
    } else{
        struct node *help = head, *prev = NULL;
        while(help && value > help->data){
            prev = help;
            help = help ->next; //Traverse linked list
        }
        newNode->next = help; //Inserting in middle or to the back
        prev->next = newNode;
    }
}
void remove(int value){
    struct node* help = head, *prev = NULL;
    while(help){//Traversal until match found
        if(help->data == value) break;
        prev = help;
        help = help->next;
    }
    if(!help) printf("\nValue not Found.\n");
    else{
        struct node *target = help;//target is the node to be deleted
        if(target == head) head = head->next;//deleting from front
        else prev->next = target->next;//deleting from the middle/end
        free(target);
    }
}
int main(){
    int n;
    while(1){
        display();
        printf("\n\n1. Instert 2. Delete 3. Exit: ");
        scanf("%d", &n);
        switch(n){
            case 1:
                printf("\nEnter an element to insert: ");
                scanf("%d", &n);
                insert(n);
                break;
            case 2:
                if(head){
                    printf("\nEnter an Element to delete: ");
                    scanf("%d", &n);
                    remove(n);
                }
                break;
            default:
                printf("\nTry again.\n");
                break;
            case 3:
                printf("\nMore programs @ pastebin.com/u/ShailRShah");
                return 0;
        }
    }
}