C++ string literal type and declaration -

two types of declaration:

char* str1 = "string 1"; 

and

char str2[] = "string 2"; 

my compiler doesn't allow me use first declaration error incorrect conversion const char[8] char*. looks okay, version this:

const char* str1 = "string 1"; 

passed compiler.

please clarify understanding. believed if declare both versions e.g. in main(), first 1 (const char*) - pointer allocated on stack , initialized address in data segment. second version (char[]) - whole array of symbols placed on stack

as far see string literal have const char[] type. using of const char* depricated? c compatibility only?

where each version store string ?

char str2[] = "string 2";

"string 2" string literal const char[9] stored in read-only memory.

char str2[] allocate char array (of size deducted initializer size) in read-write memory.

= use string literal initialize char array (doing memcpy of "string 2" content).

i mean in principle. actual machine code produced optimizations may differ, setting str2 content less trivial means memcpy string literal.

char* str1 = "string 1"; - here trying actual string literal memory address, 1 const, shouldn't assign/cast char *.

const char* str1 should work ok, casting const char[] const char * valid (they same thing, unless have access original array size during compilation, pointer variant size-less dumb-down version).