Derived Classes, Templates & Exception Handling in C++ Quiz 3

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Which type of program is recommended to include in try block?

const reference

dynamic memory allocation

static memory allocation

pointer

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What is an error in C++?

Missing of double quotes

Violation of program interface

Missing of Semicolon

Violation of syntactic and semantic rules of a languages

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Which is used to handle the exceptions in c++?

exception handler

throw

catch handler

handler

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What is most suitable for returning the logical errors in the program?

Use break keyword

Use final keyword

Set a global error indicator

Use constructor and destructor

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In nested try catch blocks, if both inner and outer catch blocks are unable to handle the exception thrown, then ______________

Program will be termianted abnormally

Compiler throws compile time errors about it

Program will run without any interrupt

Compiler executes only main()

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An uncaught handler returns to _______________

its callee

its caller

waits there for some time

main function

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Which header file is used to declare the standard exception?

#include<error>

#include<exception>

#include<exce>

#include<except>

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The C++ code which causes abnormal termination/behaviour of a program should be written under _________ block.

try

throw

catch

finally

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Which of the following is an exception in C++?

Variable not declared

An expression is wrongly written

Semicolon not written

Divide by zero

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Identify the correct statement about throw(type).

A function can throw any type of exceptions

A function can throw an exception of certain type only

A function can catch all types of exceptions

A function can?t throw any type of exception

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What function will be called when we have an uncaught exception?

try

throw

catch

terminate

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What is the difference between error and exception?

Both are the same

Errors can be handled at the run-time but the exceptions cannot

Both can be handled during run-time

Exceptions can be handled at the run-time but the errors cannot

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What happens if try catch block is not used?

wrong output

execute continuously

arise an error

program will run

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What will happen when we move to try block far away from catch block?

Increases the amount of code

Don?t alter anything

Increases the amount of code in cache

Reduces the amount of code in cache

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What are the predefined exceptions in c++?

I/O errors

Both Memory allocation errors & I/O errors

Memory allocation errors

static errors

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How many levels are there in exception safety?

17 / 63

Pick out the correct statement for error handling alternatives.

Exit from the block

Use the stack

Terminate the program

Use the queue

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Which function is invoked when an unhandled exception is thrown?

abandon()

aborted()

terminate()

stop()

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What will not be called when the terminate() is raised in the constructor?

destructor

class

main()

constructor

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What will happen when a programs throws any other type of exception other than specified?

terminate

throw

run

arise an error

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Header file used for exception handling in C++?

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What are the different types of exceptions?

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When do we call that resource is leaked?

It cannot be accessed by any standard mean

It can be accessed by any standard mean

Arise of runtime error

Arise of compile time error

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Where should we place catch block of the derived class in a try-catch block?

Before the catch block of Base class

After the catch block of Base class

After all the catch blocks

Anywhere in the sequence of catch blocks

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Which alternative can replace the throw statement?

for

break

return

exit

26 / 63

How to handle error in the destructor?

both throwing & terminate

try

throwing

terminate

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Which function is invoked when we try to throw an exception that is not supported by a function?

unutilized()

indeterminate()

unexpected()

unpredicted()

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What is the main purpose of the constructor?

Begin the execution of class

Terminate the program

Establish the class invariant

Include the macros for the program

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What do you mean by ?No exception specification??

It can catch anything

It can throw anything

It can try anything

It throws nothing

30 / 63

Exception handlers are declared with ____________ keyword.

catch

finally

try

throw

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Which statement is used to catch all types of exceptions?

catch()

catch(Test t)

catch(Test)

catch(?)

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What is Re-throwing an exception means in C++?

All of the mentioned

An exception that is not handled in one caught hence thrown again

An exception that is thrown again as it is not handled by that catching block

An exception that is caught twice

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By default, what a program does when it detects an exception?

Removes the exception and tells the programmer about an exception

Continue running

Results in the termination of the program

Calls other functions of the program

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What is an exception in C++ program?

Also known as semantic error

Also known as the syntax error

A problem that arises during the execution of a program

A problem that arises during compilation

35 / 63

What is meant by garbage collection?

Used to replace the variables

Used to delete the variables

The form of manual memory management

The form of automatic memory management

36 / 63

Which part of the try-catch block is always fully executed?

finally part

try part

throw part

catch part

37 / 63

Uncaught exception leads to ______________

execution of other functions of the program starts

no effect on the program

termination of program

successful execution of programs

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How one can restrict a function to throw particular exceptions only?

By defining a function with throw clauses

By defining a generic function within a try-catch block

Not allowed in C++

By defining multiple try-catch blocks inside a function

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How Exception handling is implemented in the C++ program?

Using Error handling schedules

Using Exception block

Using try-catch block

Using Exception keyword

40 / 63

In nested try-catch block, if the inner catch block gets executed, then______________

Outer catch block also executes

Compiler executes remaining statements of outer try-catch block and then the main() function

Program stops immediately

Compiler jumps to the outer catch block and executes remaining statements of the main() function

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What will happen if an exception that is thrown may cause a whole load of objects to go out of scope?

Produce a runtime error

Terminate the program

Compilation error

It will be added to the overhead

42 / 63

Why is it expensive to use objects for the exception?

Exception object is created only if an error actually happens

Because of execution time

Because of time and space

Memory space involved in creating an exception object

43 / 63

Where are standard exception classes grouped?

final

namespace std

error

catch

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Which operations don?t throw anything?

Operations which are dynamic

Operations which are irreversible

Operations which are reversible

Operations which are static

45 / 63

Which is used to solve the memory management problem in c++?

smart pointers

arrays

queue

stack

46 / 63

1. Which keyword is used to throw an exception?

except

try

throw

throws

47 / 63

Which of the following is best to include under try block?

default values

static values

dynamic allocations

const values

48 / 63

What kind of exceptions are available in c++?

static

unhandled

dynamic

handled

49 / 63

Which handler is used to handle all types of exception?

catch-all handler

catch-none handler

catch handler

try-catch handler

50 / 63

Why do we need to handle exceptions?

To get correct output

To avoid unexpected behaviour of a program during run-time

To let compiler remove all exceptions by itself

To successfully compile the program

51 / 63

What is the use of RAII in c++ programming?

Terminate the program

Improve the exception safety

Crash the compiler

Exit from the block

52 / 63

If inner catch block is unable to handle the exception thrown then__________

The compiler will check for appropriate catch handler of the outer try block

Program stops abnormally

The compiler looks for the outer try-catch block

The compiler will not check for appropriate catch handler of the outer try block

53 / 63

What is meant by exception specification?

A function is limited to throwing only a specified list of exceptions

A try can catch all types of exceptions

A function can throw any type of exceptions

A catch can catch all types of exceptions

54 / 63

How many types of standard exception are there in c++?

55 / 63

What can go wrong in resource management on c++?

Exception

Dangling

Leakage

Exhaustion

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What are the disadvantages if use return keyword to return error codes?

All of the mentioned

Your code size increases dramatically

You have to handle all exceptional cases explicitly

The code becomes more difficult to read

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What id the syntax for catching any type of exceptions?

catch(ALL)

catch(Exception e)

catch(Exception ALL)

catch(?)

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What are the operators available in C++ for dynamic allocation and de-allocation of memories?

delete

new

both new & delete

compare

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What kind of error can arise when there is a problem with memory?

Produce an error

runtime error

Both Segmentation fault & Produce an error

Segmentation fault

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Which operator is used as catch-all handler?

ternary operator

unary operator

ellipses operator

string operator

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Return type of uncaught_exception() is________________

char *

int

double

bool

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What operation can be performed by destructor?

Resource cleanup

Exit from the current block

Terminate the program

Abort the program

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What will happen when an exception is not processed?

Terminate the program

Crash the compiler

It will eat up a lot of memory and program size

Displays proper output

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