Key Points

Compilation

• All of the C++ code we write will go through the following steps:
  • First, the compiler changes source code in to assembly code.
  • Next, the assembler changes the assembly code into object code.
  • Finally, the linker changes the object code into machine code.
• The compiler deals with all of the parts of variables that are not actually stored in memory at run time.
  • Specifically, that means that errors related to a variable's type or name will be caught at compile time!
• The (simplest) commands to compile a source file myprogram.cpp into an executable named myprogram and then run that program are
  • clang++ -c myprogram.cpp (compilation and assembly)
  • clang++ myprogram.o -o myprogram (linking)
  • ./myprogram (running the program)
• (In the homework we will typically have additional command-line options.)

Version Control

• A version control tool lets us keep track of all the different versions of our files, without having them clutter up our workspace.
• The version-control tool you will use this semester is called git.
• We also use a website called GitHub to have a shared, web-accessible place to put copies of everyone's repositories.

Pair Programming

• Pair programming is a skill. Like any skill, it requires practice and intention to get better.
• Our job this semester, collectively, is to support each other in developing that skill!

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