#include <stdio.h>

int main(void)
{
	int a = 5;
	int *aPtr = &a;
	printf("%p  \n", aPtr);//0x7ffde04a673c
	printf("%p  \n", &aPtr);//0x7ffde04a6740
	printf("%p  \n", *aPtr);//0x5
	printf("%d  \n", aPtr);//-531994820  
	printf("%d  \n", &aPtr);//531994816
	printf("%d  \n", *aPtr);//5
};

	printf("value of the pointer:   %p (%ld)\n", aPtr, (long)aPtr);
	printf("address of the pointer: %p (%ld)\n", &aPtr, (long)&aPtr);
	printf("points to the value:    %p (%ld)\n", (void *)*aPtr, (long)*aPtr);

        printf("value of 'a':   %p (%ld)\n", (void *)a, (long)a);
	printf("address of 'a': %p (%ld)\n", &a, (long)&a);

printf("%p  \n", aPtr);//0x7ffde04a673c    // this is the value stored in variable aPtr, contains the address of the variable a
printf("%p  \n", &aPtr);//0x7ffde04a6740   // this is the address of variable aPtr
printf("%p  \n", *aPtr);//0x5              // this is the <something> found at the address where aPtr points)
printf("%d  \n", aPtr);//-531994820        // using %d is more or less meaningless on a 64bit system
printf("%d  \n", &aPtr);//531994816        // using %d is more or less meaningless
printf("%d  \n", *aPtr);//5                // but will work if you want to print a one-digit number