Exception Handling Misuses

Exception Handling Misuses

Exceptions can be used as an alternative control structure in addition to for-loops or while-blocks. For example, you can use exceptions to implement a simple application that prompts the user to enter data until a certain condition has been fulfilled:

   #include   using namespace std;  class Exit{}; //used as exception object  int main() {   int num;   cout<< "enter a number; 99 to exit" <>num;       if (num == 99)          throw Exit(); //exit the loop       cout<< "you entered: " << num << "enter another number " <

I wouldn't recommend this style of programming, though. It is inefficient due to the performance overhead resulting from exception handling. Furthermore, it is verbose, and could have been much simpler and shorter had you written it with traditional control structures such as for- or while-statements instead. As a rule, you should limit using exceptions to severe runtime errors.

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