Lecture 1, Tue 06/26

Introduction, CSIL Policies, Course Structure

Course Syllabus

Be sure to read the course syllabus for information on the logistics of this course.

https://ucsb-cs16-m18.github.io/info/syllabus/

CSIL Policies

Be sure to review the CSIL policies. Slides are attached in the following Piazza post:

https://piazza.com/class/jiqcwxay7mkdo?cid=6

High-level Overview of a Computer System

• Input Devices
  • keyboard, mouse, game controller, camera, etc.
• Output Devices
  • printer, monitor, speakers, etc.
• Processor
  • Hardware component that performs computations.
• Main Memory
  • Also known as “Random Access Memory” (RAM)
  • Volatile (does not persist when the system powers off)
• Secondary Memory
  • Non-volatile storage (ex: Mechanical / SSD Hard Drive)
  • Can hold large amounts of memory, but have slower access time than RAM.

vim Editor

• We will use vim for the first few weeks this quarter.
• Important to be comfortable with a Unix-based command-line text editor.
• Be sure to understand how to do the basic eightfunctions.

Hello World Program

// hello.cpp
#include <iostream>

using namespace std;

int main() {
	cout << "Hello CS 16!" << endl;
	return 0;
}

• Compile and execute the program

$ g++ -o hello hello.cpp
$ ./hello
Hello CS 16!
$

• g++ is one of several C++ compilers
  • Compilers translate “source code” (i.e. the contents in the .cpp file) into a lower-level representation that is easier for computer system hardware to understand.
• -o is a “flag” that instructs the g++ compiler to produce an executable file called hello
• hello.cpp is the source file for g++ to use when producing the executable file.
• In order to actually run an executable file in Unix, ./[filename] is used.