struct one inside another

[CMarco]

Hi,

I'm trying to define two strut's one inside another and I'm doing like above but it no recognize tabela_e on struct nrotas, can someone advise me.

typedef struct{
        string id_dest;
        std::vector<std::vector<std::string> > caminhos;
    }tabela_e;

    typedef struct {
          std::string id;
          std::vector<tabela_e> rotas;
    } nrotas;

if I want to to access to variables inside the struct I only have to do, for example, tabela_e.id_dest, right?

Regards,
CMarco

[Moschops]

struct tabela_e{
        string id_dest;
        std::vector<std::vector<std::string> > caminhos;
    };

struct nrotas{
          std::string id;
          std::vector<tabela_e> rotas;
    };

if I want to to access to variables inside the struct I only have to do, for example, tabela_e.id_dest, right?

First, create an object of type tabela_e
tabela_e x;

Then access it:
x.id_dest = "letters";

[CMarco]

Hi,

first thanks for the tips. So this is my struct inside another struct:

typedef struct tabela_e{
        string id_dest;
        std::vector<std::vector<std::string> > path;
    }tabela_e;

    typedef struct {
          std::string id;
          std::vector<tabela_e> route;
    } nrotas;
    nrotas mat;
    tabela_e temp;

To put all the content that I want inside route I do:

mat.route.push_back(temp); // this goes all ok 

My mat.route will be a three dimensional vector, How can I output his content.
I know that in a two dimensional I do:

for (size_t n = 0; n < temp.path.size(); n++)
      for (size_t m = 0; m < temp.path[n].size(); m++)
            EV << "Vector temp.path: " << temp.path[n][m] << '\n';

Can someone advise me of, how can I see the output content of my three dimensional vector named mat.route.

Regards,
CMarco

[CMarco]

one tip?

[Moschops]

route is not a 3D vector. It is a 1D vector. It contains objects that themselves contain a 2D vector.

string someString = mat.route[i].path[j][k];


Also, stop using typedef for structs. This is C++.

[CMarco]

Hi,

thanks, I was saying the same but my colleges or saying no its a 3D vector... Now they are thinking twice...

If i remove typedef from my struct's I have an Eclipse CDT wrongly errors, and because of that i left the typedef.

To see the output content I do (it goes for someone o need):

    for (size_t i = 0; i < mat.route.size(); i++){
           temp=mat.route[i];
           EV << "i " << i << '\n';
           for (size_t n = 0; n < temp.path.size(); n++){
               for (size_t m = 0; m < temp.path[n].size(); m++){
                   EV << "Dados: " << mat.route[i].path[n][m] << '\n';
               }
           }
       }

Regards,
CMarco

[Moschops]

When you removed the typedef, did you remember to put the name of the struct at the front?

C code:

typedef struct {
// some code
} tabela_e;

C++ code:

struct tabela_e
{
// some code
};

You wouldn't do this:

typedef class {
// some code
}  tabela_e;

so why do it with struct?

[CMarco]

Hi,

I have the same errors using for example

boost::algorithm::split(vect, srctmp, boost::algorithm::is_any_of("-")) 

but I think is an Eclipse CDT error, because when build in console goes all ok.


I do with struct because I was advise that is the best way to do. But if you have some suggestion I will be glade to hear.

Regards

[Moschops]

My suggestion is to do what I said above.

typedef struct is a C kludge to save having to type the word "struct" many times. That's it. C++ does not need the kludge. In C++, define the struct:

struct someStruct
{
// code
};

and then just use it like any other proper object type

someStruct a;