c++ - Difference between initializing a C-style string to NULL vs. the empty string -

c++ - Difference between initializing a C-style string to NULL vs. the empty string -

are these 3 equivalent:

char* p= null; char* q = ""; char r[] = {'\0'};

i suspect first 1 different rest, i'm not exclusively sure.

char* p = null;

this assigns null pointer p means p not point valid memory address.

char* q = ""; char r[] = {'\0'};

these both create empty strings , equivalent. q points valid memory address, unlike p in previous example. r array empty string.

c++ c string