Exercise 2, page 325. Exercise 11, page 237. There is a line for each session with start time and stop time. There are also lines for summing the individual data. Assume that you are to make an investigation in order to find out if a graphical tool PICA would be helpful in programming.
PICA allows top down design by refinement of a crude box into a whole page.
In the design phase it will only accept structured programming constructs and check for correct syntax. In the validation phase it will check that all constructs are marked as validated. Code generation can only be made if the syntax is correct and the whole program is validated. The graphs and the code can be printed to be a part of the documentation. You are going to use a programming class for your investigation.