Misuse of they're, there, and their is flagged as a(n) ________ violation and underlined with blue wavy lines

To find the number of days between two dates, subtract the more recent date from the older date

Indicate whether the statement is true or false

Most C++ programs that do I/O should include the ____________ header that contains the declarations required for all stream-I/O operations.

Fill in the blank(s) with the appropriate word(s).