C++ User-Defined Exceptions

The new exception can be defined by overriding and inheriting exception class functionality.

C++ user-defined exception example

Let's see the simple example of user-defined exception in which std::exception class is used to define the exception.

Output:

Enter the two numbers :
10
2
x / y = 5  

Output:

Enter the two numbers :
10
0
Attempted to divide by zero!

Note: In above example what() is a public method provided by the exception class. It is used to return the cause of an exception.