class function returning another class

[Shervin]

Hi all,

I have 2 classes, vector and matrix defined in separate header files. In the vector class I have a function performing "outer-product" of two vectors which results in a matrix type.
In the vector file, the header for the matrix is also included.

Using such codes I tried compiling and everything seemed to be alright but I got runtime error which I could not figure out why.
I checked and it seems like the operations have been performed correctly in the vector class and the whole problem to me looks like there is problem with "returning" a "matrix type" by a function of class "vector" and not the computations therein.

Any ideas what the correct way for class function returning another class is?

many thanks,
Shervin

[jsmith]

You return an instance of a class just like you'd return anything else.

It sounds like a copy constructor problem. Post the header for the matrix class.

[ciphermagi]

I use pointer functions, and return pointers into a list (with an iterator) of pointers every time I want to pass a non-basic member. I consider non-basic members to be int, double, float, char, etc.

So...something like

Matrix * newMatrix(....){
    ....
    ....
    matrix *myMatrix = new Matrix(....);
    return myMatrix;
} //This function creates a new matrix and passes the pointer to the matrix back to the creating function.

void menu(){
    list<Matrix*> matrices;
    list<Matrix*>::iterator it;
    Matrix *temp;
    ....
    ....
    temp = newMatrix(....);
    matrices.push_back(temp);
    ....
    ....
}

[Shervin]

thanks guyz, yes it was actually a copy constructor problem!