From Class on Aug 30

• Windows users may wish to download Teraterm from here
• Editor vs Word Processor Was discussed.
• #include <iostream>
  • Alows us to reslove the types of external references
  • Is just a file (/usr/include/g++-3/iostream) on my computer
  • cout is an external reference, a reference to a procedure
  • we will deal with this more in the future
• int main(void) {
  • Declares the entry point (starting point) for our program
  • int and void are optional
• { } mark code blocks
  • Code between these should be indented
• Empty lines are important and add to code readability
• variables are
  • Areas in memory where we can store data
  • We can change the value stored there
  • A type is associated with these areas
• Syntax errors - mistakes in the format of the C code
• logic errors - mistakes in what the c code is doing
• You should be able to fix your own syntax errors
• compiling
  • cc, gcc, g++, c++ are all the same program (as well as f77)
  • from gnu
  • g++ filename.C
    • Takes a high level language source code in the file filename.C
    • produces an executable in the file a.out
  • g++ -o exefile filename.C
    • Takes a high level language source code in the file filename.C
    • produces an executable in the file execfile
  • make filename
    • Takes a high level language source code in the file filename.C
    • produces an executable in the file filename
    • But only if it needs to.