can i "vetor<struct>" ?

ok... i'm getting an error message what i can't understand.
this is my first time using vectors so i'm probley doing it wrong.

Code:

---

struct NC_SOCKET_ID{
          int _id;
      };

struct NC_SOCKET_STR{
...
          NC_SOCKET_ID _id;
...
      };

vector<NC_SOCKET_STR> _SOCKET_LIST;

---

Now i get the error
<>
no match for `NC_SOCKET_ID & == NS_SOCKET_ID&'
<>
at this line in my code.

Code:

---


        if(_SOCKET_LIST[n]._id == id)
        ...

---

Am i using the vector wrong or can it not be used like this?

Compiler: Dev-c++ 4.9.7.0

Are you ever adding anything to the vector?

Stupid me. I just noticed the problem. You need to put a C++ constructor in your struct.

Example

Code:

---

struct NC_SOCKET_STR{
    NC_SOCKET_ID _id;
    NS_SOCKET_STR() {

    }
};

---

You still do need to do what I said in the other post though.

yes
i left out most of the code.

Quote:

---

Originally posted by master5001
[B]Stupid me. I just noticed the problem. You need to put a C++ constructor in your struct.

---

never heard of one in a struct... is it the same as in a class?

Indeed it is.

[edit]
changed do to the fact that it was incorrect.
[/edit]

thx it worked.
struct's being like classes should be on the faq

Well, I don't think its on the FAQ because saying "structs are like classes in C++" wouldn't totally be accurate. If you are interested in more of the differences I've seen threads come and go about this topic. Just do a search...although I don't know what you would search for.

k thx again...
also just to note...( don't know y i did it this way firstoff)

Code:

---

struct NC_SOCKET_ID{
          int _id;
      };
//would be better off as
typedef signed long int NC_SOCKET_ID;

---

:D I didn't realize that all you had in the struct was an int.

Quote:

---

Originally posted by master5001
Indeed it is. The only thing a struct can't do that a class can is inherit another struct or class. Otherwise structs and classes are pretty much the same.

---

No, actually a struct CAN use inheritance, and is capable of polymorphism. The difference between structs and classes are that structs default to public datamembers/member functions/inheritance while classes default to private.