---
title: More Arrays and Strings
---
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# {{ page.title }}
## CSC 161 – {{ page.notes[0]['date'] | date: "%B %e, %Y" }}

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# Agenda for Today
1. Department Events
2. Upcoming Work
3. Discussion
4. Lab
5. Wrap Up

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# Department Events

## CS Table: Hallucinated References
.indent[
  Tuesday, February 10th at noon in JRC 224C  
]

You can find a complete list of token events and submit more at <https://tinyurl.com/csc161-tokens>.

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# Upcoming Work

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# Week 3 Lab Report
**Due:** Tonight by 10:00pm

See last week's class slides for the list of exercises you should submit to gradescope.

Make sure you follow the coding standards we discussed two weeks ago.

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# Week 4 Quiz
As usual, we'll have a quiz on Thursday.
The quiz will last 10 minutes, and will focus on:

1. Pointers
2. Arrays and Strings

You should expect more difficult questions than what you saw on last week's quiz.

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# Homework: Yahtzee
**Due:** Thursday, February 12th by 10pm  
**Late Deadline:** Saturday, February 14th by 10pm

## Questions
**What resources can we use if we have questions on an assignment?**  
- Any material posted or linked on the course website (no other online resources)
- Linux `man` pages
- Work you completed for labs (cite your partner)
- Office hours

You can discuss general C questions and program design with evening tutors and other students in the course, but the work you submit must be your own.

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# Discussion

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# Discussion: Arrays and Strings
**Items for think, pair, share:**

All questions reference this code fragment:
```c
char* str = "Hello world";
int arr[8] = {1, 2, 3, 4, 5, 6, 7, 8};
```

1. Write an expression that gets the fourth character of `str`.

2. Write an expression that gets the third element of `arr` without using the index operator (i.e. `[]`).

3. Write a statement that sets the fourth element of `arr` to `0` without using the index operator.

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# Discussion: Pointer Math

What does this C function do?
See if you can come up with a good explanation.

```c
int f(int a[], int b) {
  int c = 0;
  for (int* d = a; d < a + b; d++) {
    c += *d;
  }
  return c;
}
```

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# Reading Questions
Do you have any unanswered questions from the reading?

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# Lab

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# Wrap Up

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# Wrap Up

## Lab Work
Submit the completed Tic Tac Toe game for your week 4 lab report.

## Mentor Session
Attend tomorrow's mentor session from 7-9pm in this room if you want need more practice with class material.

## Reading
{% include slide_reading.html %}