Girish said:
Hi,
1. If the new operator fails what should be done to override it?
Catch the exception that it throws. But if you're out of memory, most
programs can't do much more than just exit immediately, which the
exception already does if it's not caught.
2. If we want to gurantee that function does not throws exception what
should be done?
If it's a function you wrote yourself, declare it as something like:
void myfunction() throw();
If it's an already existing function, you can't. But you can catch all
the exceptions that it throws:
try
{
somefunction();
}
catch(...)
{
std::cout << "an exception was thrown" << std::endl;
}
If you're specifically talking about new, you can alternatively use
new(nothrow) from the header <new>. It will, instead of throwing an
exception, return a null pointer in the case of failure.
