Catching Debug Assert Failure

Sometimes I see the exception like "Debug Assertion Failed" from Microsoft C++ Debug Library

See the following code.

Code:

int main()
{
   map<int,double>m;
   m[1] = 123;
   m[34]= 321;
   map<int,double>::iterator itr;
   itr=m.find(100);
   //if(itr != m.end())   // I have commented this line of code
   cout<<itr->second<<endl;
  return 0;
}

Then I get a runtime exception like as I mentioned above.
I know this can be removed If I uncomment the if statement

Even with the commented if condition if I use the try catch block then alos I am not able to catch the exception.

My question is how to catch this type of exception.