Course Info

• 1 credit class, with the grade reported as Credit or No Credit
• Credit received for
  • Attendance at 10 or more of the 14 lectures (Sign your name on the provided paper each class.)
  • Completion of all assignments

More Course Info

• NO Required Textbook

  Get a C++ reference.

• Programs must work correctly as compiled on our Unix machines.
  You have an account.
• Where to get help?
  • TA
  • Karen
  • form a study group

Course Goals

• Become familiar with many aspects of C++
• Understand that the language is too large to keep all aspects/syntax in your head

Note that with a 1-credit class,
time permits breadth coverage, not depth.

The History: C

• designed by Dennis Ritchie in the 1970's at Bell Labs
• a new language for systems programming, specifically to implement the evolving Unix operating system
  (to avoid writing O.S. code directly in
  assembly language)
• language goal: efficient compiled code

Java

• designed from scratch in 1990's
• object oriented (OO)
• designed around the safety of the programmer
• should be platform-independent
• uses much the same syntax as C

C++

• designed in the 1980's (also at Bell Labs) by Bjarne Stroustrup
• a superset of C, to include OOP
• language goal:
  the programmer should never have to pay for language features not used

A Program's Development Cycle

1. Edit source code
   • Unix editors are vim and gvim, emacs,
     pico, etc.
   • name source code files with suffix of
     .cpp, .cc, or .C
     (Use .cpp for this class.)
2. Compile
   % g++ myprogram.cpp
   places the executable into a file called a.out
3. Execute program
   % a.out

• Terminology

  Java	classes	fields	methods
  C++	classes	data members	member functions

  
  
• C++ also has free functions,
  functions that do not belong to a class
• main() is a free function
• every program must have main(),
  as it is where program execution begins

A First Program

   #include <iostream>

   using namespace std;

   // a comment, in my first program
   int main () {
       cout << "Good morning" << endl;
       int a;

       a = 12;
       cout << "a = " << a << endl;
       return 0;
   }

Data Types

• integer types
  int, short, long,
  unsigned int, unsigned short, unsigned long,
  char, signed char, unsigned char,
  bool (true is 0, and false is non-zero)
• floating point types
  float (single precision floating point)
  double (double precision floating point)
  long double