Exception Handling

Question 1

What is exception

Answer 1

Exception is an unexpected problem that arises during the execution of a program

Question 2

C++ exception handling is built upon three keywords. What are they?

Answer 2

try, throw and catch

Question 3

What is the try statement

Answer 3

This allows you to test a block of code for errors while it is being executed

Question 4

What is the throw statements?

Answer 4

Throw keyword throws an exception when a problem is detected. This enables us to detect custom error.

Question 5

What is catch statement

Answer 5

This allows you to define a block of code to be executed if an error occurs in the try block

Question 6

Mention some C++ standard exceptions

Answer 6

bad_cast:
runtime_error:
bad_exceptions
bad_typeid
logic_error
invalid_arguments
length_error
overflow_error
range_error
underflow_error

Question 7

Differnce between runtime_error and logic_error

Answer 7

Runtime error is An exception that theoretically cannot be detected by reading the code

Logic error is an exception that theoretically can be detected by reading the code.

Question 8

Describe bad_exceptions

Answer 8

This is a useful device to handle unexpected exceptions in a c++ programs.

Question 9

Difference between overflow_error and underflow_error

Answer 9

overflow error is thrown if a mathematical overflow occurs

underflow error is thrown if a mathmatical underflow occurs