Question

I’m learning to program in Arduino and, as far as I understand it, it uses the C language (please correct me if I’m wrong).

I’m a senior in JavaScript and PHP, and now I’m having hard time with simple stuff like string handling.

If in JavaScript I have

var c = 33;
var myString = "hello" + c;
alert(myString); //---> hello33

how does it work in C/Arduino?

Answer 1

In C, you would do something like:

char buff[100]; // needs to be large enough.
int c = 33;
sprintf (buff, "hello%d", c); // may want a space after hello

// Now do something with buff.

C is a language where you need to manage some low-level details yourself. There’s no automatically expanding string type in the base language/library although no doubt there are some good third-party ones around (“better strings”, for example, since it doesn’t drag in a lot of other stuff you don’t want, particularly important in the embedded space).