Can someone reformulate what string means? And perhaps float?

Question

I'm seriously unsure what string is suppose to be. I wouldn't mind a long description. Also I'm unsure if I understand float correctly, is it for more specific numbers? like 6.45 and whatnot?

Answer 1

Nevermind. I realize I wasn't taking them litteral enough. String is for more than one letter.

Answer 2

string is for variable name like
string body;
and float is decimal number like
float x=3.14;
the results are clear at console