CSCI 112
Lab 4 - Simple C Selection
Objectives:
- Solve a selection problem using a C program.
Readings:
- Read Chapter 4 in the Hanly/Koffman text.
Deliverables: (DUE
BY THE MIDNIGHT ON THE DAY OF LAB!)
- Submittal of your ALGORITHM designed to solve the
problem.
- Submittal of your lab4.c and Makefile files.
- Your program needs to
match the algorithm you submitted.
TO DO (for today's
lab)
- Design an ALGORITHM to solve Programming Project #6 on
page 232 (page 217 in 6th edition, or page 205 of 5th edition) of the Hanly/Koffman text.
- Whenever designing your
solution, consider that the likelihood of having the coordinate values as
input are as follows: Q1>Q2>Q4>Q3
- Write a C program following your algorithm (i.e.
implement your design in C).
- Make sure that your
IMPLEMENTATION is matching your ALGORITHM (order of statements, etc.).
- Use redirection to enter your x y coordinate pair. Do
not prompt for these values, just read them in from a data file using
scanf as you did the last
time.
- For your input data
file build a short file with two floats in the first line. (Assume all
numbers have one decimal place precision.)
Suppose you wanted to enter an x, y of 3.0
-3.2. You
would build a file that had the following numbers in line one.
3.0 -3.2
Call this file datain4 and save it to your directory.
- A sample run of your
program assuming "lab4" for the name of your run image would
look like the following:
$ lab4 < datain4
- A sample output would
look like the following:
(bbb3.0,bb-3.2) is in
quadrant IV
- Some other possible
outputs for various numbers follows:
(bbb3.0,bbb0.0) is on the x
axis
(bb-0.0,bbb0.0) is on the origin
(bb-2.5,bbb1.9) is in
quadrant II
- You do not need to submit your sample data file. I will
provide a set of test data files for the automatic script to use to test
your program.
LAB 4 ENRICHMENT
- Analyze the Code, Compile, Run and Analyze the Results
for the following programs: