Online Coding Lessons C and C++ Coding 2

Question 1

In C, what does the sizeof operator return for an int on most modern 64-bit systems?

Accepted Answer

4 bytes

Answer

2 bytes

Answer

8 bytes

Answer

1 byte

Question 2

Which C++ keyword is used to prevent a member function from modifying the object's state?

Accepted Answer

const

Answer

static

Answer

volatile

Answer

mutable

Question 3

What is the result of the C expression 7 / 2 when both operands are integers?

Accepted Answer

3

Answer

3.5

Answer

4

Answer

3.0

Question 4

In C++, which container provides automatic dynamic resizing and contiguous storage?

Accepted Answer

std::vector

Answer

std::list

Answer

std::map

Answer

std::set

Question 5

What does the C standard library function malloc return when allocation fails?

Accepted Answer

NULL

Answer

0 as an int

Answer

-1

Answer

An uninitialized pointer

Question 6

Which operator is used to access a struct member through a pointer in C?

Accepted Answer

->

Answer

.

Answer

::

Answer

&

Question 7

In C++, what does the 'new' operator do that 'malloc' does not?

Accepted Answer

Calls the object's constructor

Answer

Allocates on the stack

Answer

Returns void*

Answer

Never throws