Part $1$:

Define a new exception class named $$BadVarException$$ that must inherit

from the C$++$ runtime$\_$error class. This class will capture the error case for a degree about the year and the name.

Part $2$:

Rewrite the class named $$VariableInt$$ in the previous exercise to generate a "BadVarException"

whenever the caller tries to create the VariableInt object with the following info:

$-$ invalid variable name: empty or all blanks

$-$ integer value is negative

Part $3$:

Write a function named $$createVariableObject$$ that will accept the variable name and the value

and it will create a VariableInt object dynamically.

If there is an exception, it will check to see if that is a bad integer value, then it will create a simple Variable object.

If the name is bad, it will return nullptr to the caller.

This function must handle all error cases for invalid name such as empty or blanks or invalid value $($negative$).$

This function must use handle errors using try$-$catch the exception.

This function will return the pointer of the newly created VariableInt or Variable object or nullptr depending on the error it receives.

Note: there is no cin and cout in this function. All input and output must be done in the testing function.

Part $4$:

The main$()$ function to test $$createVariableObject$$:

Create at least $4$ objects with different error cases. You can make up your own data. You do not need to get input from the user.