COMP 220 All Assignments COMP 220 All Assignments | Page 8

Conclusions: Write at least one nontrivial paragraph that explains, in detail, either a significant
problem you had and how you solved it or, if you had no significant problems, something you
learned by doing the exercise.
Each lab exercise should have a separate section in the lab-report document.
Your lab grade will be based upon
the formatting of your source code; the use of meaningful identifiers; the extent of internal
documentation; the degree to which an exercises’ specifications are met; and the completeness
of your lab report.
i L A B S T E P S
STEP 1: Create a Multifile Project
Objective: Create a C++ console application that will model the characteristics of a resistor.
Create a multifile project. Create and add to the project an h file containing the resistor-class
definition. Create and add to the project a cpp file containing the implementation of the class-
member functions. Create and add to the project a ccp file containing the main() function,
which will instantiate a resistor object and test its member functions.
STEP 2: Required Class Members
The resistor class will, at minimum, have members that do the following.
store the nominal resistance value of a resistor store the tolerance of a resistor initialize any
and all nominal-resistance values to correct, EIA, nonzero values that are greater than 0 and
less than 1,000,000 ohms initialize any and all resistance-tolerance values to correct, E12, E24,
E48, or E96 resistance-tolerance values allow the nominal-resistance and tolerance values of a
resistor object to be changed by the user All member functions should have a test message
stating the name of the function. All the test messages should be displayed or not displayed,
depending on the value of a Boolean variable declared in main(). If the Boolean , display the
message. If the Boolean , do not display the message.
STEP 3: Program Operations
Function main() should instatiate two objects of class resistor. Function main() should display
the current values of all resistor objects. Function main() should also calculate and display the
minimum and maximum in-tolerance resistance values of each resistor object from the resistor
data members. Function main() should allow the user to change the values of the nominal
resistance and the resistor tolerance of both resistor objects, and it should also correctly handle