c++ - Difference between following declarations -

recent times confused use of new keyword string data type. can please try clarify it

what's difference between following string initialization:

string* name = new string("abc") ; .... delete name;

string name = "abc";

is advisable use new keyword , values within string how stored in heap internal buffers of std::string. if explains storage location.

what's difference between returning string vs string*

string* name() {     string* name = new string("abc") ;     return name; }  string name() {     string name = "abc";     return name; }

there several reasons prefer second approach on first:

most important reason: string string, period. string* may point string, or may null/nullptr, or may point random location in memory. therefore, should use plain old string's on string*'s wherever possible using them less prone errors.
declaring string object places on stack, meaning automatically cleaned when leaves scope. using new means have manually clean allocated memory.
new relatively slow operation. using stack variables faster.

while string store's data on heap, allocating string on heap still adds level of indirection.

GCM