C++ try catch question?

hello i hardly ever do c++ any more but i answerd a question earlia and been mucking around since then





i got a problem im use to c# and to handle errors its simple





try{whatever and if theres a error it will automaticly go





}





catch{over here}





however c++ not quite same i seem to have to decalare somthing in the catch and use a throw for some reason my point is i got this code (simplified for example)





try{


int x = Convert::ToInt32(this-%26gt;textBox1-%26gt;Text);


int y=Convert::ToInt32(this-%26gt;textBox2-%26gt;Text)...


System::Windows::Forms::MessageBox::Show... =s " + Convert::ToString(x+y),"mkb answer",MessageBoxButtons::OK,MessageBox...


}


catch{}





how can i make it so if theres a error such as some entering a a at the end of a int so theres a add error it just automaticly states in a message box or label error sort thing i know the code for catch like System::windows::forms::messagebox etc just dont seem to work the way im use to doing it in c#

C++ try catch question?
use throw.


assign a character variable.


put input from the textbox into the variable.


check if its number or character


then use throw if character else preceed with that.





for eg.


throw (a)


where a is the character


catch (char a)

parts of a flower