illistrate the difference between pointers and arrays in c

arrays_vs_pointers.c

#include<stdio.h>                                                                                                                                                       
#include<stdlib.h>                                                                                                                                                      
                                                                                                                                                                        
int main(void) {                                                                                                                                                        
        int *ptr = calloc(5, sizeof(int));                                                                                                                              
        printf("sizeof(ptr) = %ld\n", sizeof(ptr));
        for (void *end = &ptr[5]; ptr != end; ptr++)                                                                                                                    
                printf("%d\n", *ptr);                                                                                                                                   
                                                                                                                                                                        
        int arr[5] = {0, 1};
        printf("sizeof(arr) = %ld\n", sizeof(arr));
        int *cur = &arr[0];
        for (void *end = &cur[5]; cur != end; cur++)                                                                                                                    
                printf("%d\n", *cur);                                                                                                                                   
}