In C++, the null character is represented as ____.

Calculating which of the following normally requires the data to be sorted first

a) mean b) median c) mode d) total

Answer the following statements true (T) or false (F)

1. The variable MAIL is set to the filename that receives your mail. 2. The .mailrc file is a startup file for the mail utility. 3. The mailx command lets you send your mail to a group of users. 4. While in mailx, you can type ? for help. 5. You type exit to exit mailx.