Thursday February 3, 1994

Assigned Reading: 2.1 - 2.3

Handouts (available on-line): none

Topics Covered:

Announcement: Computer Science Council of Majors is sponsoring tutorials on how to use the computer systems on campus. This is your opportunity to learn from other students.
Announcement: Job available for a notetaker; pay is $4.50 per hour. See Student Support Services, Math/Psych Building, Room 211.
Roll Call was taken. If you missed it and intend to take this class for credit, see the instructor or send him e-mail.
Discussion on the compilation process, how source code is turned into object code and why we want to write programs this way.
Your first C program "Hello World".
A second program plus examples on how to and how not to compile and run your programs on UNIX.
Some nitty gritty points:
- C is case sensitive.
- Name of file containing program must end with ".c"
- Explained \n.
- Explained about libraries and the header files <stdio.h> and "genlib.h".
- Explained that printf is a function, not a "command".
- Argument to a function = data.
- Executing your program: running a.out
- Using the "cc201" command from UNIX. (See Unix Tips.)
- C and whitespace
Some more examples of simple programs. Explained how to use GetInteger, GetReal and GetLine.
- A program that reads in two integers and prints out the sum. Sample output.
- A program that reads in two floating point numbers and prints out the sum. Sample ouptut.
- A program that uses a string variable. Sample output.