Having trouble with sprintf function and string class

Question

in my code, I was using string class to make an array to store my menu items

String menu[2] = {{"Menu 1"}, {"Menu2"}};

How do I convert this into char arrays and how do I call them?

Example:
Serial.println(menu[0]);

• KIIV: Sounds like you're looking for menu[0].c_str()
• Juraj: const char* menu[2] = {"Menu 1", "Menu2"};
• Delta_G: By the way, you can access a string. You call a function. You don't call a string.

Answer 1

Create them as char arrays like this:

const char* menu[2] = {"Menu 1", "Menu 2"};

and use them like this:

Serial.println(menu[0]);

• DataFiddler: Strictly speaking it's an array of char*, not an array of char. And you should handle "Menu 1" as a const char*, to allow the compiler inhibit you doing nonsense. And avoid warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
• Delta_G: Edited for the const.
• Delta_G: It is an array of char*. And each one of those pointers points to a char array, not a String. My point there was to distinguish between char array and String object.
• DataFiddler: Agreed. Even the warning text calls "hello" a string constant. But string (string literals aka const char array) and Arduino String Objects are so different that we should avoid using the term string completely.