pointer to pointer -

void find_integer(int **source)
{
    // int *pint = &INTEGER;

	printf("***************************\n");

    printf("*source = %d\n", *source);
	printf("**source = %d\n", **source);
	printf("Address of &*source %p\n", &*source);
	printf("Address of &source %p\n", &source);
	printf("Value pointed to *source %d\n", *source);
	//printf("Value pointed to **source %d\n", **source);
	printf("*************************\n\n");
    
	*source = &INTEGER;

    printf("*source = %p\n", *source);
    printf("**source = %d\n", **source);
}

int main()
{
    int *pint = &INTEGER;
    double *preal = NULL;
    int a = 3, b = 5;

	printf("Address of Integer %p\n", &INTEGER);
	printf("Address of pint %p\n\n", &pint);

    find_integer(&pint);
    return 0;
}