The _________ class can be used to read input from an in-memory string object. The _________ class can be used to write output to an in-memory string object. Q468 The _________ function returns the...

The _________ class can be used to read input from an in-memory string object.

The _________ class can be used to write output to an in-memory string object.

Q468

The _________ function returns the length of a string.

To _________ two strings means to append one string to the other.