Try with 2d vector catch the error

[Milano]

I declare my 2d vector as follows:

std::vector<std::vector<int> > mattrix_

in try-catch block and I receive the error caught from catch(...), I make this question just to confirm if it is of necessity for me to initialize that 2d vector at the same time in the try block...Hopefully I can receive any yes-or-nos or any comments from you...Sorry for such a question since I am really new to this.

Thanks a lot in advance,

Regards,

-Milano