Help me in solving PPSC169 problem

My issue

not understanding

My code

#include <stdio.h>

int main() {
    int arr[100] = {2, 4, 6, 8, 10}; // Initial array
    int size = 5; // Current size of the array

    int position_to_delete = 2; // Index of the element to delete

    // Update the code to shift elements to fill the gap left by the deleted element
    
    

    // Update the size of the array
    

    // Print the updated array
    for (int i = 0; i < size; i++) {
        printf("%d ", arr[i]);
    }

    return 0;
}

Learning course: Programming and Problem solving using C
Problem Link: https://www.codechef.com/learn/course/ciet-programming-c/CIETPC28/problems/PPSC169