Linked List in C (3Sorted List)

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

typedef struct _node
{
    int data;
    struct _node *next;
}node;

void insertNodeSorted(node **head, node *newNode);
void printList(node *head);
void deleteList(node **head);

void insertNodeSorted(node **head, node *newNode)
{
    if(*head == NULL)
    {
        *head = newNode;
    }
    else if( (*head)->data > newNode->data )
    {
        newNode->next = *head;
        *head = newNode;
    }
    else
    {
        node *temp = *head;
        while( (temp->next != NULL) && (temp->next->data < newNode->data))
        {
            temp = temp->next;
        }
        newNode -> next = temp -> next;
        temp -> next = newNode;
    }
}

void printList(node *head)
{
    int i = 0;
    node *temp = head;
    while(temp != NULL)
    {
        printf("data in node %d is: %d \n", i, temp->data);
        temp = temp->next; 
        i++;
    }
}

void deleteList(node **head)
{
    node *temp = *head;
    node *delNode;

    while(temp!= NULL)
    {
        delNode = temp;
        temp = temp -> next;
        delNode -> next = NULL;
        free(delNode);            
    }

    free(temp);
}

int main(int argc, char *argv[])
{
    int seed;
    int num_of_rand_nums;
    int max_value;
    int i;
    node *head = NULL;

    sscanf(argv[1],"%d",&seed);
    srandom(seed);

    sscanf(argv[2],"%d",&num_of_rand_nums);
    sscanf(argv[3],"%d",&max_value);

    for(i=0;i<num_of_rand_nums;i++)
    {    
        node *newNode = malloc(sizeof(node));
        if(newNode == NULL)
        {
            printf("newNode is NULL! \n");
            exit(1);
        }
        newNode -> next = NULL;
        newNode -> data = random()%(max_value + 1);
        insertNodeSorted(&head,newNode);
    }
    
    printList(head);
    deleteList(&head);

    return 0;
}