Memory Allocation char* and char[]
The first one creates a pointer variable (four or eight bytes of storage depending on the platform) and stores a location of a string literal there, The second one creates an array of six characters (including zero string terminator byte) and copies the literal there.
You should get a compiler warning on the first line since the literal is const.
The first one is a non-const pointer to const (read-only) data, the second is a non-const array.