Shall I use cerr

Question

Is it in good style do use cerr in situation described below?

try
    {
    cout << a + b;
    }
    catch(const IntException& e)
    {
        c         


        

Answer 1

Yes, because while by default they both go to the terminal, you could change where their output is directed, and you may wish cerr to go to a log file while cout continues to just go to stdout.

Essentially it gives you more control over where different output goes if you want it now or in the future.