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

A void return type means the function does not return any value.

Question 2

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

Accepted Answer

Overloading

Answer

Function overloading allows multiple functions with the same name but different signatures.

Question 3

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

Accepted Answer

2

Answer

Binary 110 AND 011 equals 010, which is 2.

Question 4

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

Accepted Answer

Deduces the type from the initializer

Answer

auto lets the compiler infer the variable's type from its initializer expression.

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

break exits the switch so execution does not fall through into later cases.

Online Coding Lessons Practice Test