Re: returning a ublas matrix from a function

You've declared main() as returning int but you're trying to return a type
that isn't an int. What do you expect to happen? The compiler error is
pretty clear here IMO.


On Tue, Aug 5, 2014 at 9:27 AM, sanann <[email protected]> wrote:

> Thank you very much for that.
>
> but on the other hand i tried the same with another part of my code but i
> still get the same error. could you kindly help me through this too.
>
> int main(int argc, char *argv[])
> {
>     QApplication a(argc, argv);
>     const size_t arraySize = 3;
>     boost::numeric::ublas::matrix<double> M[arraySize] =
>     {
>         boost::numeric::ublas::scalar_matrix<double>(2, 2),
>         boost::numeric::ublas::scalar_matrix<double>(3, 3),
>         boost::numeric::ublas::scalar_matrix<double>(4, 4)
>     };
>
>
>      for (int i=0;i<4;i++)
>      {
>          std::cout << M[i]<< std::endl;
>      }
>      return M;
> }
>
> I end up with the same error.
> error: invalid conversion from 'boost::numeric::ublas::matrix<double>*' to
> 'int' [-fpermissive]
>       return M;
>              ^
>
>
>
> --
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