Online Coding Lessons C and C++ Coding 5

Question 1

In C, what does a function declared with a 'void' return type indicate?

Accepted Answer

It returns no value

Answer

It returns zero

Answer

It returns a pointer

Answer

It returns an error code

Question 2

Which C++ concept lets two functions share a name but differ by parameter list?

Accepted Answer

Overloading

Answer

Overriding

Answer

Templating

Answer

Inheriting

Question 3

What does the bitwise AND operator & produce for the operands 6 & 3 in C?

Accepted Answer

2

Answer

7

Answer

9

Answer

5

Question 4

In C++, what does the 'auto' keyword do in a variable declaration?

Accepted Answer

Deduces the type from the initializer

Answer

Allocates automatically on the heap

Answer

Makes the variable static

Answer

Marks it constant

Question 5

What is the purpose of the 'break' statement inside a C switch block?

Accepted Answer

Exit the switch to prevent fall-through

Answer

Skip to the next case

Answer

Restart the switch

Answer

Return from the function

Question 6

In C++, what does passing an argument by reference (using &) avoid compared to passing by value?

Accepted Answer

Copying the argument

Answer

Type checking

Answer

Compilation

Answer

Memory allocation

Question 7

Which loop in C is guaranteed to execute its body at least once?

Accepted Answer

do-while loop

Answer

for loop

Answer

while loop

Answer

nested loop