Test 3 (Autumn Repeat):
B.Eng. (Electronic Engineering)

General

This test is made up of two parts:

1. Reformatting and correcting a given program.

2. Modifying this corrected program in certain specified ways.

Note that marks will be awarded purely on the content of the final report. Therefore, at all stages of the test, please describe your plans, problems encountered, tests carried out and, when the required tasks have been completed, describe any conclusions drawn from the exercise.

Part 1 (60%)

The program SERIES.C is supposed to calculate the equivalent resistance of a set of separate resistors , , etc. connected in series, according to the following equation:

The program is currently poorly laid out and formatted, and has various other defects. You are required to:

• Present a reformatted version of the program which demonstrates satisfactory practice for spacing, line breaking and indentation. Add further comments if appropriate.

• Correct any errors or defects manifested at translation time (i.e. during compilation and/or linkage). In the case of warnings, either resolve them or explain why they can be safely ignored.

• Correct any defects manifested at run time. Ensure that you test the program severely in an effort to reveal any remaining defects.

Part 2 (40%)

Decompose the main() function of the program SERIES.C (as corrected in part 1) into a number of separate (sub-)functions which are appropriately invoked by main(). Introduce separate functions for:

• Reading in the number of resistors.
• Reading in the resistor values.
• Calculating the equivalent resistance.
• Printing out the equivalent resistance.

Correct any defects manifested in your modified program. Ensure that you test the program severely in an effort to reveal any remaining run time defects.