What operation is used to join text strings together, such as "Hello, " + name?

What operation is used to join text strings together, such as "Hello, " + name?

• A. Merge
• B. Concatentate
• C. Append
• D. Join

Answer: (B)

Joining text strings is called concatenation. The expression "Hello, " + name uses concatenation to form one longer string by placing the first piece next to the value of name. In many languages, the plus sign is overloaded so it concatenates strings rather than adding numbers, which is why this example works as a way to build a message. The noun form of the operation is concatenation; one option here uses a misspelled form of the word, and the other terms describe different ideas—merge is a broader data-structure action, append is a different way of extending a string, and join usually refers to combining items with a separator.

Joining text strings is called concatenation. The expression "Hello, " + name uses concatenation to form one longer string by placing the first piece next to the value of name. In many languages, the plus sign is overloaded so it concatenates strings rather than adding numbers, which is why this example works as a way to build a message. The noun form of the operation is concatenation; one option here uses a misspelled form of the word, and the other terms describe different ideas—merge is a broader data-structure action, append is a different way of extending a string, and join usually refers to combining items with a separator.