Hi all,
In Delphi the following code will work:
(xx[n-1]as TLibr).XEarth=x x[1].xm*(-1.0);
where xx is defined as a array of class TBody, and it has n members;
Tlibr is the derived class of Tbody, and Xearth is its private data.
How to write the corresponding code in c++ ?
Thanks, 1 1742
On 30 Jun 2003 02:05:37 -0700, am****@sohu.com (Titan) wrote: Hi all,
In Delphi the following code will work: (xx[n-1]as TLibr).XEarth=x x[1].xm*(-1.0); where xx is defined as a array of class TBody, and it has n members; Tlibr is the derived class of Tbody, and Xearth is its private data.
How to write the corresponding code in c++ ?
If Xearth is private, you can't access it. It it isn't private, then,
firstly you'll need an array of TBody* rather than TBody (an array of
TBody only contains TBody elements, and not elements derived from
TBody), and secondly the code should look something like this:
The set up code looks something like this:
TBody* xx[n]; //or TBody** xx = new TBody*[n];
xx[n-1] = new TLibr;
and here's the transcription of your code:
dynamic_cast<TL ibr&>(*(xx[n-1])).XEarth = xx[1]->xm * -1.0;
It will throw an exception if xx[n-1] isn't an instance of TLibr.
Tom This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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