Lecture 3: April 7, 2023

Reading: zyBooks text, §2.20; [2]

1. Greetings and felicitations!
   1. ssh Tutorial is now up; Use your CAS (Kerberos) name to log in
      1. ssh CAS-login-name@pcnn.cs.ucdavis.edu
      2. Important: If you do not use your CAS login, you will not log in!
   2. To see which CSIF systems are up and which are down, go to http://iceman.cs.ucdavis.edu/nagios3/cgi-bin/status.cgi?hostgroup=all

2. Example: making change [fahr1.c]
   1. Add input using scanf
   2. Add error checking

3. Variable names
4. Basic types
   1. int, long vs. short, unsigned vs. signed
   2. char, treated like an int that holds 1 character
   3. float, double
   4. Type casting

5. Basic operators
   1. arithmetic: +, -, *, /, %
   2. % defined so that n % p = r implies n = ap + r for some a
   3. 5 % −2 can be 1 (5= (−2) × (−2) + 1) or −1 (5 = (−3) × (−2) + (−1))

6. Associativity of operations
   1. Difference between associativity of operations and order of evaluation

7. A more sophisticated Fahrenheit to Celsius temperature converter [fahr2.c]
   1. #include <stdio.h>
   2. Macros
   3. float
   4. for loop

8. Debugging: find the error! [fahr2-buggy.c]

Handouts

1. vim Tutorial vim.pdf

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 36A, Programming & Problem Solving Version of April 6, 2023 at 3:44PM

You can also obtain a PDF version of this.