c++pointersnew-operatorstring-literalsstorage-duration

Is char* created with "..." and new are on stack and heap respectively? Just want a brief answer if my understanding is right or wrong?

const char* s1 = "John";
const char* s2 = new char[] {"Cena"};
// is s1 on stack?
// is s2 on heap?
...
// use s1 and s2
...

delete s1;
// do I need to delete s1?

delete[] s2?
// s2 definitely must be deleted right?

I have added my questions in the comments above. Thanks in advance.

Solution

  • You may delete what was created using the operator new.

    String literals have static storage duration. They are alive until the program ends.

    In this code snippet

    const char* s1 = "John";
const char* s2 = new char[] {"Cena"};

    there is allocated dynamically only the array initialized by the string literal "Cena". So to delete it (to free the allocated memory) you need apply the operator delete [] to the pointer s2.

    delete [] s2;