weird C++ "ambiguous call to overloaded function"

[c1t1z3n]

hiya, i'm having this weird error on my project. As far as I know "ambiguous call to overloaded function" should only occur when the compiler must choose from several methods, but here i don't think it's the case. I've got the following class:

class item
{
public:
    item(string id_,string datatype_);
    //item(string id_,string datatype_,int periodo_);
    //item(string id_,string datatype_,string headerfile_);
    //item(string id_, string datatype_, int periodo_=1, string headerfile_="");
    //item(const item& it);
 
    void set_id(string id_);
    void set_datatype(string datatype_);
    void set_periodo(int periodo_);
    void set_headerfile(string headerfile_);
 
    string get_id();
    string get_datatype();
    int get_periodo();    
    string get_headerfile();
 
    item& operator=(const item& var);
//    item operator*();
    virtual ~item();
 
public:
    string id;
    string datatype;
    int periodo;
    string headerfile;
};
 
 
(most of the methods are commente because I was going crazy trying to solve this)
 
the main is like this (just for testing):
 
int main()
{
    item var3("string1", "string2");
 
    return 0;
}
 

all the other commented methods work, but this constructor raises the error,

any help is much appreciated

thanks in advance.

[JosAH]

item(string id_,string datatype_);
item(string id_, string datatype_, int periodo_=1, string headerfile_="");

Those are the two functions that are ambiguous. Which function to use when
someone does this?

item("foo", "bar");

kind regards,

Jos

[c1t1z3n]

Those are the two functions that are ambiguous. Which function to use when
someone does this?

item("foo", "bar");

kind regards,

Jos

that should summon the 1st function:

item(string id_,string datatype_);

[JosAH]

that should summon the 1st function:

item(string id_,string datatype_);

Nope, the other two parameters are optional (you supplied default values for them).

kind regards,

Jos

[c1t1z3n]

Nope, the other two parameters are optional (you supplied default values for them).

kind regards,

Jos

hm... but even either function, the problem persists...

item var("abc", "def");

should summon both

item(string id_,string datatype_);
and
item(string id_, string datatype_, int periodo_=1, string headerfile_="");

thus creating ambiguity. so if either function was removed, visual studio should call the correct function, right? but the poroblem persists.. =(

[Ganon11]

Maybe you could have a single constructor giving default values to all parameters? On the one hand, you wouldn't be able to use the constructor with 3 strings, but on the other, there would be no ambiguity.

[AdrianH]

hm... but even either function, the problem persists...

item var("abc", "def");

should summon both

item(string id_,string datatype_);
and
item(string id_, string datatype_, int periodo_=1, string headerfile_="");

thus creating ambiguity. so if either function was removed, visual studio should call the correct function, right? but the poroblem persists.. =(

What Jos stated should be correct. So post the error messages and the lines that they refer to with some context around them. That way we can determine what the problem is.


Adrian