We'll begin with the promised quiz. I'll also share STRING.H and TESTSTR.C. The rest of the class you can work on the next assignment.

Read Chapter 5: Pointers and Arrays beginning on page 89 through the end of Section 5.5: Character Pointers and Functions on on page 102 of The C Programming Language.

Then complete Exercises 5-2, which asks you to write a version of strcat that uses pointers. Also write pointer versions of atoi, itoa and reverse from Exercise 5-4

To earn an A on your next evaluation, commits made both during class and between classes must contain evidence of the effective use of the 3 hours of time you have allotted to work on this, even if you can't complete it. This assignment is due Friday, December 12th at 11:59 pm for 3B and Saturday, December 13th at 11:59 pm for 1A so I have time to evaluate them before we meet next week. If you've been slacking, you need to put in more than 3 hours to make up for what you didn't do earlier!

We will share the programs assigned for homework, and then pair you up for the next set of classwork / homework problems.

I'll then share a few programs which will be useful to you in completing your next assignment, including: PNUM.C, UCASE.C, and especially WRDLINE.C and WC.C.

I'll demo the last two of these and highly encourage you to study them!

Please come to our next class with working solutions to the following problems:

1. Write a program in a file named CHRNUMS.C to prepend each line of a text file with the number of characters in that line. Given a file named LINES.TXT with content:

   This is a file
   containing lines of
   different
   lengths.
   

   Running CHRNUMS LINES.TXT would print:

   15: This is a file
   20: containing lines of
   10: different
   8:  lengths.
   

2. Complete Exercise 1-17 on page 28 of The C Programming Language. Use the reverse(s) function you complete in that exercise to write a program in a file named BACKWARD.C that takes a text file as a command line argument and prints out each line in the file backwards.

Be prepared for a possible quiz on these two exercises when you arrive in class next time!