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Beginner's Question: with statement in C++

Posted on 2000-04-28
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Last Modified: 2010-05-18
I recently migrate from Pascal. But I can't find anything like the Pascal "with" statement in the C++ online help. How to do this in C++?
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Question by:sccheung
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4 Comments
 
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Expert Comment

by:David MacDonald
ID: 2761512
What was the "with " statement doing?...
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AlexVirochovsky earned 50 total points
ID: 2761590
Or, in C/C++ no "with" statement.
Whan can be equivalent?
If you use some structure/class/pointer, you use "->"/"."
  contsruction.
In Pascal: (psevdocode)

with MyFile
  .Open
  .read
  .Close
End with

In C++
  ifstream in("myfile.dat");
  in.getline(...);

or MyClass *myClass;

  myClass->Open(...);
  myClass->read();
  myClass->Close();

I hope, it helps. Alex
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LVL 22

Expert Comment

by:nietod
ID: 2762038
yeah, there really is no equivalent, which is actually good. Pascal's with statement was a mistake that leads to confussion an problems.  This one of the rare times when C++ has a syntractic advantage of Pascal

In a sense, C++'s member functions are similar to Pascal's "with".  This is because a member fucntion can access all the data members of an object (class or structure) without having to explicitly dereference the "this" pointer to get to the data members.
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Author Comment

by:sccheung
ID: 2763484
It's fine. I can use copy and paste instead. But since the answer didn't "solve" the question, (because there is no solution in this case) I can't give a very high grade.
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