C++ Operators and Expressions Quiz

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What is the result of the expression $i=i+1$ in the C++ programming language?

$i$ is decremented by 1

$i$ remains unchanged

$i$ becomes 1

$i$ is incremented by 1 (correct)

What is the equivalent postfix expression for $++d$ in C++?

$d++$ (correct)

$d=d+1$

$d+=1$

$d+1$

When using the prefix increment operator in C++, what is the sequence of operations?

No operation is performed

Assign a new value, then increment

Use the value, then increment

Increment, then use the value (correct)

Which of the following is the correct decrement operator in C++?

$d--$ Signup and view all the answers

What happens when the prefix increment operator is used in an expression in C++?

The value is incremented after being used in the expression Signup and view all the answers

Which operator is used for postfix decrement in C++?

$--d$ Signup and view all the answers

What is the value of the breakpoint in the switch statement for the given code?

10 Signup and view all the answers

What is the purpose of the break statement in the given code?

To exit from a switch statement Signup and view all the answers

What is the significance of Exp1, Exp2, and Exp3 in the context of the given code?

They are logical expressions used for case comparisons Signup and view all the answers

What is the role of the default case in a switch statement?

It specifies the action to be taken when no case matches Signup and view all the answers

In C++, what is the use of a semicolon after the break statement in a switch case?

It has no specific use and is optional Signup and view all the answers

What is the significance of the const 1, const2, and const3 in the given code?

They are predefined constants used as case labels Signup and view all the answers

What does the keyword exp represent in the given code?

A variable holding a boolean value for case evaluation Signup and view all the answers

c++ is commonly associated with which type of programming language?

Object-oriented programming (OOP) Signup and view all the answers

In C++, what is the purpose of case const1: case const2: case const3: stat; break;?

stat will be executed sequentially for each of const1, const2, and const3 Signup and view all the answers

Exp1. Exp2 : Exp3 represents what kind of expression in C++?

Comparison expression with multiple conditions Signup and view all the answers

What is the purpose of a postfix operator?

To apply the operation after the variable Signup and view all the answers

What does the expression $++(x+1)$ evaluate to?

$x+3$ Signup and view all the answers

In the context of the given text, what does the symbol '++' represent?

Increment by 1 Signup and view all the answers

If $a = 5$ and $c = 10$, what is the value of $(x*5)--$?

$5x-4$ Signup and view all the answers

What is the result of $--x - y$ when $x=3$ and $y=4$?

$2 - 4$ Signup and view all the answers

In programming, what does the 'if' statement do?

Performs a comparison and executes a block of code if the condition is true Signup and view all the answers

What is the purpose of the 'switch' statement in programming?

To handle multiple possible conditions for a single variable Signup and view all the answers

What does the 'else' statement do in programming?

Executes a block of code if the 'if' condition is false Signup and view all the answers

If $a = 5$, what does $c++$ mean in programming?

$c=c+1$ Signup and view all the answers

In the context of programming, what does the 'break' statement do?

Ends the current loop or switch statement and transfers control to the next statement Signup and view all the answers

$3 + + + + 3$ is equivalent to:

6 Signup and view all the answers

What will be the output if a variable z is defined as z = x + y-- ?

z = x + y - 1 Signup and view all the answers