Question

Select the namespace/namespaces which consists of methods like Length(), Indexer(), Append() for manipulating the strings.

(a) System.Class

(b) System.Array

(c) System.Text

(d) None of the mentioned

I got this question during an interview for a job.

The question is from Writing Console Output Operations topic in section Console I/O Operations and Stream Classes of C#

Answer 1

The correct option is (c) System.Text

Explanation: The system.text namespace contains the Stringbuilder class and hence must include using system.text for manipulating the mutable strings.