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Why there is NO Copy or Assign for IO Objects?

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  1. ofstream out1, out2;
  2.     out1 = out2;   // error: cannot assign stream objects
  3.     // print function: parameter is copied
  4.     ofstream print(ofstream);
  5.     out2 = print(out2);  // error: cannot copy stream objects
Why there is NO Copy or Assign for IO Objects? Can anyone tell me the reason? Thanks!
Dec 21 '07 #1
1 1523
RRick
463 Recognized Expert Contributor
Probably, because of what is inside the object.

BTW: This sounds suspiciously like an exam question.

Take a look at the state of an io object and you'll find flags for eof, fail, bad, etc. What would happen to the flags in one object if they changed in another copy of the object.
Dec 22 '07 #2

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