CS195, Class 7: Introduction to C (2)

Overview:
* Lab
* Reflection: 
  + Particularly interesting things you observed
  + Surprises
  + Frustrations

Administrivia:
* Shall we permit visitors?
* Questions on homework 3?  (Yes, I fixed the summary.)

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Reflection
* If you finish early, start on sections 1.3 and 1.4 of K&R
* What value should you return from main?
* What you should do in the Unix world (and perhaps
  everywhere)

	#include <stdlib.h>
	main() 
	{
  	  ...
  	  exit(EXIT_SUCCESS);
	} /* main() */

* Why can you compile without the header?
* gcc is friendlier than it needs to be (e.g., multi-line 
  strings).  To make it unfriendly, use 
  % gcc -pedantic
* The wonder of floating point approximations.
  e.g., 1.2 is not stored exactly
  Use FLT_EPSILON, defined in float.h
* % man 3 function
  gives manual page for a function