CS201
Lab 5 - Looping, looping, and even more of looping...

NOTE: Directions on formatting of the output have been updated on 02/18/08.

Objectives:

• Use loops to read from files and to perform incremental calculations. 
• Learn how to declare and use 1D arrays.

Readings:

• Read Chapter 5 in the Hanly/Koffman text.
• Read Section 8.1-8.3 in the Hanly/Koffman text (you can finish on p. 376).

Deliverables: (DUE BY END OF LAB!)

• Submittal of your algorithm and two files: lab5.c and  Makefile.

TO DO (for today's lab)

• Design an algorithm to sole Programming Project #11 on page 277 of the Hanly/Koffman text.
• Write a C program solving that problem.                                            
• Use fscanf to enter your base_size height_size values. Do not prompt for these values, just read them in from two data files using fscanf for a change. This time you need to declare base_size and height_size as arrays of integers, where base_size should be capable of storing 5 elements (of int type), and height_size needs to have room for 6 elements (of int type). You will read the values from two files stored in your current directory (the input files need to be named datain5base and datain5height, and stored in your current directory).
• Use a for-type loop, that counts forward, to read data from datain5base file to base_size array.
• Use a for-type loop, that counts backwards (i.e. uses negative steps), to read data from datain5height file to height_size array. Make sure that despite using decreasing counter (i--), your still read and assign values to array in increasing order (i.e. first iteration of the loop assigns the first value from the datain5height file to the first element, i.e.: base_size[0]). This one might be slightly tricky, so make sure you start and finish the loop in the right moment. 
• Use only while-type or do-while-type loops to print out your output on the screen. Make sure to format output in exactly the same way, as presented below (Beginning of my output command has the following structure: printf("%2dBxB%2dBB%3dBBBBBBBBBBBBB%7.2fBBBBBBB%6.2f", ... where B's are blanks).
• For your first input data file build a file with 5 lines. Store only one number per line (assume that all numbers are integers). E.g.:
  2
  4
  6
  8
  10
• Call this file datain5base and save it to your current (i.e. lab5) directory.
• For your second input data file, that provides values for height_size array, you need to do almost the same. This time however the file needs to store 6 numbers in 6 lines, and it needs to be named datain5height.

• A sample run of your program assuming "lab5" for the name of your run image would look like the following:
  $ lab5

A sample output may look like the following:
LumberBBBCross-SectionalBBBMomentBofBBBSection

SizeBBBBBAreaBBBBBBBBBBBBBBInertiaBBBBBModulus

B2BxBB2BBBB4BBBBBBBBBBBBBBBB1.33BBBBBBBBB1.33

B2BxBB4BBBB8BBBBBBBBBBBBBBB10.67BBBBBBBBB5.33

B2BxBB6BBB12BBBBBBBBBBBBBBB36.00BBBBBBBB12.00

B2BxBB8BBB16BBBBBBBBBBBBBBB85.33BBBBBBBB21.33

B2BxB10BBB20BBBBBBBBBBBBBB166.67BBBBBBBB33.33

B2BxB12BBB24BBBBBBBBBBBBBB288.00BBBBBBBB48.00

B4BxBB2BBBB8BBBBBBBBBBBBBBBB2.67BBBBBBBBB2.67

B4BxBB4BBB16BBBBBBBBBBBBBBB21.33BBBBBBBB10.67

B4BxBB6BBB24BBBBBBBBBBBBBBB72.00BBBBBBBB24.00

B4BxBB8BBB32BBBBBBBBBBBBBB170.67BBBBBBBB42.67

B4BxB10BBB40BBBBBBBBBBBBBB333.33BBBBBBBB66.67

B4BxB12BBB48BBBBBBBBBBBBBB576.00BBBBBBBB96.00

B6BxBB2BBB12BBBBBBBBBBBBBBBB4.00BBBBBBBBB4.00

B6BxBB4BBB24BBBBBBBBBBBBBBB32.00BBBBBBBB16.00

B6BxBB6BBB36BBBBBBBBBBBBBB108.00BBBBBBBB36.00

B6BxBB8BBB48BBBBBBBBBBBBBB256.00BBBBBBBB64.00

B6BxB10BBB60BBBBBBBBBBBBBB500.00BBBBBBB100.00

B6BxB12BBB72BBBBBBBBBBBBBB864.00BBBBBBB144.00

B8BxBB2BBB16BBBBBBBBBBBBBBBB5.33BBBBBBBBB5.33

B8BxBB4BBB32BBBBBBBBBBBBBBB42.67BBBBBBBB21.33

B8BxBB6BBB48BBBBBBBBBBBBBB144.00BBBBBBBB48.00

B8BxBB8BBB64BBBBBBBBBBBBBB341.33BBBBBBBB85.33

B8BxB10BBB80BBBBBBBBBBBBBB666.67BBBBBBB133.33

B8BxB12BBB96BBBBBBBBBBBBB1152.00BBBBBBB192.00

10BxBB2BBB20BBBBBBBBBBBBBBBB6.67BBBBBBBBB6.67

10BxBB4BBB40BBBBBBBBBBBBBBB53.33BBBBBBBB26.67

10BxBB6BBB60BBBBBBBBBBBBBB180.00BBBBBBBB60.00

10BxBB8BBB80BBBBBBBBBBBBBB426.67BBBBBBB106.67

10BxB10BB100BBBBBBBBBBBBBB833.33BBBBBBB166.67

10BxB12BB120BBBBBBBBBBBBB1440.00BBBBBBB240.00

• The automatic submittal script will expect your output to be formatted exactly as shown above. The B's are blanks. Here is a screen-shot if you need it (this is only a few lines of the output you need to generate):

• You do not need to submit your sample data files. I will provide a set of test data files for the automatic script to use to test your program.