C++ FAQ / Section 4 / FAQ 4.50

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Revised Jul 4, 2012

[4.50] What updates were made for the 01/97 release?

Global changes:

• Added the (much requested!) one-click download feature. This automagically sends you a copy of the entire FAQ so you can browse off-line. There's a similar feature to get a copy of the "plaintext" version of the FAQ.
• Removed those pesky "hit counters" from each HTML page.
• Added nifty forward and backward links just after each FAQ.
• Added more nifty navigation aids at the bottom of each page.
• Renamed section [6] from "Management Issues" to "Big Picture Issues."

5 New FAQs:

• [4.50] What updates were made for the 01/97 release?
  (created)
• [15.2] Why does my program go into an infinite loop when someone enters an invalid input character?
  (created)
• [15.4] How does that funky while (std::cin >> foo) syntax work?
  (created)
• [16.17] But the previous FAQ's code is SOOOO tricky and error prone! Isn't there a simpler way?
  (created)
• [27.6] Is the ?: operator evil since it can be used to create unreadable code?
  (created)

16 Changed FAQs:

• [1.3] Copying Permissions
  (simplified)
• [2.1] Where's the closest mirror site to access this document?
  (removed the "USA-2" site)
• [2.2] What happened to the one-click-download option?
  (rewrote and added a one-click feature to get .zip, .tar.Z or .tar.gz format)
• [5.1] What does IMHO mean? (or IMO, IMNSHO, FWIW, OTOH, etc.)?
  (added KUTGW (thanks to Bengt Richter))
• [15.8] How can I provide printing for my class Fred?
  (added note about cascading operator<< calls)
• [15.10] How can I provide input for my class Fred?
  (added note about cascading operator<< calls)
• [16.7] How can I convince my (older) compiler to automatically check new to see if it returns NULL?
  (fixed bugs: new handlers don't take arguments, thanks to Scott Aaron; changed set_new_hanlder to set_new_handler, thanks to Peter Andersson)
• [16.16] How do I allocate multidimensional arrays using new?
  (rewritten and expanded with a rectangular-matrix case)
• [18.1] What is "const correctness"?
  (rewrote because of helpful feedback from Nor Jaidi)
• [21.6] Is a Circle a kind-of an Ellipse?
  (added a caveat that setSize(x,y) isn't sacred)
• [21.7] Are there other options to the "Circle is/isnot kind-of Ellipse" dilemma?
  (added a caveat that setSize(x,y) isn't sacred)
• [21.8] But I have a Ph.D. in Mathematics, and I'm sure a Circle is a kind of an Ellipse! Does this mean Marshall Cline is stupid? Or that C++ is stupid? Or that OO is stupid?
  (added a caveat that setSize(x,y) isn't sacred)
• [23.5] When my base class's constructor calls a virtual function on its this object, why doesn't my derived class's override of that virtual function get invoked?
  (rewrote)
• [32.8] How can I pass an object of a C++ class to/from a C function?
  (added #ifndef FRED_H / #define FRED_H to code)
• [38.5] Where can I get information about the C++ compiler from {Borland, IBM, Microsoft, Sun, etc.}?
  (added HP C++)
• [40.5] Where can I get OS-specific questions answered (e.g., BC++, Windows, etc)?
  (added Borland C++ URLs thanks to Simon Edlund)