passing array to a function by declaring array as parameter in function

#include <stdio.h>
int fun1(int array[])
{
  for (int i = 0; i < 4; ++i)
  {
    printf("The value of %d is %d \n",i,array[i]);

  }
  array[0]=89;/*if we change the formal(parameter) value effect will be reflected in
 actual(parameter) value as it passes the address of array*/
  
}
int main ()
{
  int arr[]={2,4,6,8};
  printf("The value of index 0 is %d\n",arr[0]);
  fun1(arr);
  printf("The value of index 0 is %d\n",arr[0]);
  return 0;
}