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[C++]Question

 
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IMRobbie
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PostPosted: Fri Dec 04, 2009 3:13 pm    Post subject: [C++]Question Reply with quote
Can someone write me some sample code that would place a blank space between each character in a string?
Or just explain?
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Flyte
Peanuts!!!!
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Joined: 19 Apr 2006
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PostPosted: Fri Dec 04, 2009 4:26 pm    Post subject: Reply with quote
Code:
#include <iostream>
#include <string>

using namespace std;

int main()
{
   string something = "WhatisthisIdon'teven...";

   for(string::iterator i = something.begin() + 1; i != something.end(); i = something.insert(i, ' ') + 2);

   cout << something << endl;

   return 0;
}
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marryjohnson
How do I cheat?
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PostPosted: Wed Dec 16, 2009 12:07 am    Post subject: Reply with quote
What is the use of virtual destructor? Please any one explain this with example..
Thanks..
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hcavolsdsadgadsg
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PostPosted: Wed Dec 16, 2009 12:51 am    Post subject: Reply with quote
a virtual function lets you override the functionality of whatever in the base class, using your derived class.

say you had a class and it's derived class. without a virtual deconstructor, the derived deconstrutor wouldn't be called.
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Flyte
Peanuts!!!!
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PostPosted: Wed Dec 16, 2009 1:02 am    Post subject: Reply with quote
You need it when dealing with polymorphism and dynamic memory allocation. You can see the effects in the following example: http://codepad.org/nMT5ph0s

You'll notice that the destructor in the first part is not called (shock! horror!). We can remedy this by making the destructor virtual (as shown in the second part).
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