describe how exception-handling is using try/except similar to and different from handling exceptional cases using ordinary decision structures (variations on if)?

a)  Write down what will be the output of the following program and briefly justify youranswer.b) Instead of the “replacement” semantics of exception handling used in modern languages(i.e., the semantics introduced in lecture), a very early design of exception handling introducedin the PL/I language uses a “binding” semantics. In particular, the design dynamically tracks asequence of “catch” blocks that are currently active; a catch block is active whenever the corre-sponding try block is active. Moreover, whenever an exception is thrown, the sequence of active“catch” blocks will be traversed (in a first-in-last-out manner) to find a matching handler. Fur-thermore, execution will resume at the statement following the one that throws exception, ratherthan the next statement after the matching “catch” block as we have seen in the “replacement”semantics. What will be the output of the following program if the language uses the “binding” semantics?Briefly justify your answer

in c++ code