Answer 1

I can explain the logic of how I'd do it and you can convert it into C++

1) make an array of Strings
String arr = {"a", "b", "c"}

2) get a random generated num that goes from 0 to array.length-1

int random = (int) Math.random * array.length-1

3) print or return the value with function

Print:
cout>> arr[random]

Method:
public static String functionName() {

String arr = {"a", "b", "c"};

Int rdm = (int) (Math.random() * arr.length);

return arr[rdm]

4) call the function

functionName();

I did it in java, its heavily commented so you should be able to convert to c++

https://code.sololearn.com/c8H9wqYt9CSk/?ref=app