Evaluate expressions that manipulate strings.
AAP-2.D.1 String concatenation joins together two or more strings end-to-end to make a new string.
AAP-2.D.2 A substring is part of an existing string.
Evaluate expressions that manipulate strings.
AAP-2.D.1 String concatenation joins together two or more strings end-to-end to make a new string.
AAP-2.D.2 A substring is part of an existing string.