Two basic C++ questions about string literals and dynamic allocation

char * aString = "This is a string.";

char aString[] = "This is a string.";

int someNumber;

int * someNumber = new int;

char *aString = "This is a string.";

char aString[] = "This is a string.";

int someNumber;

int *someNumber = new int;

void func() {
    char foo[] = "hello";

    cout << foo << endl;

    foo[2] = 'w';
    foo[3] = 'w';

    cout << foo << endl;
}

func();
func();

hello
hewwo
hello
hewwo

void func() {
    const char* c_foo = "hello";
    char* foo = const_cast<char*>(c_foo);

    cout << foo << endl;

    foo[2] = 'w';
    foo[3] = 'w';

    cout << foo << endl;
}

hello
hewwo
hewwo
hewwo