? about C arrays

Hello,

I've been searching the code for the definition of the bond_cashflow array, a class array:

bond_cashflow

but havn't been able to find a specific array creation statement, ie something like:

BondCash[] bond_cashflow

but only see this statement:

amt_flow = new bond_cashflow [1];

? does the statement above automagically create the "bond_cashflow" array?

thanks very much for any insights!
bobK

Well in order for this to be valid C++:

bond_cashflow * amt_cashflow;
amt_cashflow = new bond_cashflow [1];

bond_cashflow would need to be a type and the result would be an array called "amt_cashflow".

Now why have you created an array of one element?

Yes that is the way that:

amt_flow

is defined

Bond_cashflow * amt_flow;

So by making "amt_flow" a pointer to a "Bond_cashflow" class, it allows one to treat the Bond_cashflow class as if it were a member of an array?

bk

With the mention of class and new, I believe that this question has to do with C++, not C.

Moved to C++ forum.

Well what are you really doing? The appropriate time for new[] (or malloc in C--I'm still not sure what language you're using) is when you need to allocate a resource, like an array of a certain type. Any other use for new[] is wrong.

Quote:

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Originally Posted by bobk544

Yes that is the way that:

amt_flow

is defined

Bond_cashflow * amt_flow;

So by making "amt_flow" a pointer to a "Bond_cashflow" class, it allows one to treat the Bond_cashflow class as if it were a member of an array?

bk

---

Um ... I think you have that backwards. You're not treating the class as though you it is part of an array, you're making a whole new thing, and that thing turns out to be an array of Bond_cashflows. It doesn't change what a Bond_cashflow is itself.

ok thanks all i'm going to look at this some more and try to create a small protype, appreciate the very considerate help!

bk

Code:

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BondCash[] bond_cashflow

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If you're just looking for ordinary array-declaration syntax, it looks like this:

Code:

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type array_name[size];

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In your case, that would be:

Code:

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BondCash bond_cashflow[SIZE];

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