How c++ is case sensitive?

Answer 1

You can use two or more variables in different cases (upper/lower) & they all will be treated differently.

Ex-

int A = 3;
int a = 6;

cout<<a; // 6
cout<<A; // 3

Answer 2

https://www.sololearn.com/discuss/976495/?ref=app
https://www.sololearn.com/discuss/35435/?ref=app