C++ 9th Edition: Chapter 5 - Loops and Files Quiz

Play an AI-generated podcast conversation about this lesson

What does the increment operator ++ do in C++?

Subtracts one from a variable

Adds one to a variable (correct)

Multiplies a variable by one

Divides a variable by one

Which statement is equivalent to the expression 'val++'?

val += 1

val = val + 1 (correct)

val = val - 1

val -= 1

In which mode does the prefix increment operator return the value of the variable?

Prefix mode (correct)

Postfix mode

Both prefix and postfix modes

None of the above

What happens when you use the decrement operator -- in C++?

Subtracts one from a variable Signup and view all the answers

In which mode does the postfix decrement operator increment or decrement first, then return the value of the variable?

Postfix mode Signup and view all the answers

What would be the result of the statement 'int x = 5; cout << x++ + 5;' in C++?

11 Signup and view all the answers

Which operator is used for decrementing a variable by one in C++?

--= Signup and view all the answers

When using the postfix mode, what does 'val--' return before actually decrementing 'val'?

'val' remains unchanged Signup and view all the answers

In C++, when using the prefix mode for the increment operator, what does '++val' return?

The value of the variable after being incremented Signup and view all the answers

Which statement is equivalent to the expression 'val = val + 1;' in C++?

val++; Signup and view all the answers

When using the postfix mode for the decrement operator in C++, what does 'val--' return?

The value of the variable after being decremented Signup and view all the answers

What is the role of the increment operator '++' in C++?

Adds one to a variable Signup and view all the answers

Which mode of usage would return the value of a variable before incrementing it?

--val; Signup and view all the answers

In C++, what does '--val' do when used as a decrement operator?

Subtracts one from 'val' before returning its value Signup and view all the answers

If a variable 'num' has the value 5 in C++, what would be the result of 'num++ + 1;'?

5 Signup and view all the answers

C++ 9th Edition: Chapter 5 - Loops and Files Quiz

Podcast Beta

Questions and Answers