Chapter 3, Problem 3.15E

State which of the following are true and which are false. If a statement is false, explain why.

1. Experience has shown that the most difficult part of solving a problem on a computer is producing a working C program.
2. A sentinel value must be a value that cannot be confused with a legitimate data value.
3. Flowlines indicate the actions to be performed.
4. Conditions written inside decision symbols always contain arithmetic operators (i.e., +, -, *, /, and %).
5. In top-down, stepwise refinement, each refinement is a complete representation of the algorithm.