Catching default exceptions in C++

Question

I was just wondering if a system exception like say divide by zero actually "throws" something to the application. Would it be possible to catch this somehow by default?.

i mean we can define a custom divide fn which checks for null divisor and throws an exception, but just thought it would be nice if this exception was thrown by default

//say I do this
int i;
try
{
i /= 0; // My compiler (gcc) did warn abt the divide by zero :-)
}
catch (...)
{
// Can we get here  for this case?
}

Answer 1

This is OS-dependent. You can do it in Visual C++ code on Windows - catch(...) will also catch so-called structured exceptions that include divisions by zero, access violations, etc., but not in gcc-compiled code on Linux.

Answer 2

The C++ Standard does not say that divide by zero throws an exception - it says that it is undefined behaviour.

Also, when you say:

i /= 0; // My compiler (gcc) did warn abt the divide by zero :-)

the compiler can only give the warning if the thing you divide by is a constant.