Variable stuck into If

Question

I'm trying to learn C++ and I'm creating some useless application to test. I'm working with const char and arguments, and in this code I can't get the title string.

const char* title = "";
if (argc >= 3) {
    string tittle(argv[2]);
    title = tittle.c_str();
}

Please help me!

https://stackoverflow.com/questions/4949254/const-char-const-versus-const-char — MPops, May 21 '18 at 17:47

score 6 · Accepted Answer · answered May 21 '18 at 17:47

The problem is that when you use

    title = tittle.c_str();

you are left with a dangling pointer. Instead of const const* title, use std::string title.

std::string title;
if (argc >= 3) {
    title = argv[2];
    cout << "true";
}

If you need to a char const* later in your program, you can use title.c_str(). Hopefully you won't need it.

Variable stuck into If

1 Answers1