add value to an array C

array_add.cpp

#include <stdio.h>

int main() {
    // init array
    int arr[10] = {18, 27, 24, 33, 72, 0, 0, 0, 0, 0};
    // declare var
    int i, number;

    // print array list
    printf("Array of Number\n");
    for (i = 0; i < 10; i++) {
        printf("index %d value %d\n", i, arr[i]);
    }

    // insert new data
    printf("\n");
    printf("\n");
    printf("Enter an integer: ");
    scanf("%d", &number);

    // add array to new variable
    int new_arr[] = {};
    new_arr[0] = number;
    for (i = 0; i < 10; i++) {
        new_arr[i+1] = arr[i];
    }

    // print new array list
    printf("\n");
    printf("\n");
    printf("New Array of Number\n");
    for (i = 0; i < 10; i++) {
        printf("index %d value %d\n", i, new_arr[i]);
    }
}