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wanna sandwich
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 Posted: Fri Sep 09, 2005 3:24 pm Post subject: how to create this data structure? |
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Hi,
I'm using Visual C++ and I'm trying to create a global data structure that
looks like this:
mainarray[1] =
subarray1[1] = subarray2[CString, CString, CString, ...];
subarray1[2] = CString
subarray1[3] = CString
mainarray[2] =
subarray1[1] = subarray2[CString, CString, CString, ...];
subarray1[2] = CString
subarray1[3] = CString
etc...
I need to be able to add and remove from this data structure from the
various methods within the main cpp implementation file. Any advice on how
to create this?
Thanks!
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Christopher Yeleighton
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| Posted: Sat Sep 10, 2005 12:45 am Post subject: Re: how to create this data structure? |
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"wanna sandwich" <wannasandwich (AT) hotmail (DOT) com> wrote
| Quote: | Hi,
I'm using Visual C++ and I'm trying to create a global data structure that
looks like this:
[snip] |
Do you want to define the structure itself or an instance of the structure?
Chris
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Ali Çehreli
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| Posted: Sat Sep 10, 2005 1:33 pm Post subject: Re: how to create this data structure? |
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"wanna sandwich" <wannasandwich (AT) hotmail (DOT) com> wrote
| Quote: | I'm using Visual C++ and I'm trying to create a global data structure that
looks like this:
mainarray[1] =
|
To be consistent and conventional, I recommend you switch to 0-based
indexing:
mainarray[0]
| Quote: | subarray1[1] = subarray2[CString, CString, CString, ...];
|
I recommend to dropping CString, and using std::string. For the above type,
std::vector should work:
#include <string>
#include <vector>
/* ... */
typedef std::vector<std::string> Names;
| Quote: | subarray1[2] = CString
subarray1[3] = CString
|
Do subarray1 really represent a collection; or do mainarray actually contain
three members? I will assume the latter, and give this as a beginning:
class Parent
{
Names children_;
std::string name_;
std::string last_name_;
public:
Parent(std::string const & name, std::string const & last_name);
void add_child(std::string const & name);
/* ... */
};
Then you need a collection of those:
typedef std::vector<Parent> Parents;
int main()
{
Parents parents;
Parent ali("Ali", "Somebody");
ali.add_child("Bora");
parents.push_back(ali);
// maybe even later:
parents[0].add_child("Can");
}
Ali
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NMail
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| Posted: Sat Sep 10, 2005 1:33 pm Post subject: Re: how to create this data structure? |
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by using a 'struct'
struct MainArray
{
vector<string> SubArray1;
string s1;
string s2;
};
wanna sandwich wrote:
| Quote: | Hi,
I'm using Visual C++ and I'm trying to create a global data structure that
looks like this:
mainarray[1] =
subarray1[1] = subarray2[CString, CString, CString, ...];
subarray1[2] = CString
subarray1[3] = CString
mainarray[2] =
subarray1[1] = subarray2[CString, CString, CString, ...];
subarray1[2] = CString
subarray1[3] = CString
etc...
I need to be able to add and remove from this data structure from the
various methods within the main cpp implementation file. Any advice on how
to create this?
|
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wanna sandwich
Guest
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| Posted: Sat Sep 10, 2005 1:37 pm Post subject: Re: how to create this data structure? |
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"Christopher Yeleighton" <krixel (AT) qed (DOT) pl> wrote
| Quote: |
"wanna sandwich" <wannasandwich (AT) hotmail (DOT) com> wrote in message
news:3E3Ue.450053$s54.155183 (AT) pd7tw2no (DOT) ..
Hi,
I'm using Visual C++ and I'm trying to create a global data structure
that
looks like this:
[snip]
Do you want to define the structure itself or an instance of the
structure?
Chris
|
I guess I just need an instance of the structure. I was thinking that I will
probably need to create a class for this, but I'm still a little foggy on
how that would work.
Thanks.
Darren
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BobR
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| Posted: Sat Sep 10, 2005 1:37 pm Post subject: Re: how to create this data structure? |
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wanna sandwich wrote in message <3E3Ue.450053$s54.155183@pd7tw2no>...
| Quote: | Hi,
I'm using Visual C++ and I'm trying to create a global data structure that
looks like this:
mainarray[1] =
subarray1[1] = subarray2[CString, CString, CString, ...];
subarray1[2] = CString
subarray1[3] = CString
mainarray[2] =
subarray1[1] = subarray2[CString, CString, CString, ...];
subarray1[2] = CString
subarray1[3] = CString
etc...
I need to be able to add and remove from this data structure from the
various methods within the main cpp implementation file. Any advice on how
to create this?
Thanks!
|
#include<vector>
using std::vector;
// vector<vector > mainarray;
typedef vector<std::string> vSub2;
typedef vector<vSub2> vSub1;
vector<vSub1> mainarray;
std::string HiThere("Hello Vector!");
vSub2 Sub2;
vSub1 Sub1;
Sub2.push_back(HiThere);
Sub1.push_back(Sub2);
mainarray.push_back(Sub1);
vSub2 Sub2b(3); // reserve 3
vSub1 Sub1b(3);
Sub2b.at(0)=HiThere;
Sub2b.at(1)=HiThere;
Sub2b.at(2)=HiThere;
Sub1b.at(0)=Sub2b;
Sub1b.at(1)=Sub2b;
Sub1b.at(2)=Sub2b;
mainarray.push_back(Sub1b);
std::cout<<"mainarray.at(0).at(0).at(0)
="<
std::cout<<"mainarray.at(1).at(2).at(2)
="<
// output:
mainarray.at(0).at(0).at(0) =Hello Vector!
mainarray.at(1).at(2).at(2) =Hello Vector!
--
Bob R
POVrookie
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