Answer 1

Characters can be added, but the result will not be a string.

Eg - cout<<'0'+'A';
// Prints char(113) or 'q', not "0A".

This is because the operator treats them as integers and simply adds their ASCII values instead. So '0'(48) + 'A'(65) = 'q'(113).

To add a character to form a string, you will have to declare a string with a single character, and then you can append the character using +.

Eg - cout<<string("a")+'b';
// Prints ab, not char(195).
// Notice the double quotes and the
// cast to C++03 string.

And to add a character to a C-string (a char*), you need to convert the second character to a string, and use strcat().

Lastly, you may declare a new class and overload the + operator for the same.