Difference between char* and char[]

Question

I know this is a very basic question. I am confused as to why and how are the following different.

char str[] = \"Test\";
char *str = \"Test\";

Answer 1

A pointer can be re-pointed to something else:

char foo[] = "foo";
char bar[] = "bar";

char *str = foo;  // str points to 'f'
str = bar;        // Now str points to 'b'
++str;            // Now str points to 'a'

The last example of incrementing the pointer shows that you can easily iterate over the contents of a string, one element at a time.