A wildcard character that serves as a placeholder for one or more unknown characters is the:

When an error occurs in a formula, a(n) ________ button appears next to the cell

A) function checking B) circular reference C) function diagnostic D) error checking

What is the purpose of writing comments and documentation in your source code?

A. You and others can understand what you are doing. B. The compiler can interpret your code. C. The program can interpret the algorithm correctly. D. The program will run more efficiently.