how to catch out of memory exception in c++?

Question

can anyone please tell me how to catch out of memory exception?

for ex.

try
{
    while(true)
    {
        int i = new int;
    }
}
catch( ? <---         


        

Answer 1

You should catch an object of type std::bad_alloc.

Alternatively, you can also use a nothrow verison of new as:

int *pi = new (nothrow) int[N]; 
if(pi == NULL) 
{
   std::cout << "Could not allocate memory" << std::endl;
}

When you use this, no exception is thrown if the new fails. Instead,it simply returns NULL which you check before proceeding further.