CMP 012: Boolean Expressions and Relational Operators Quiz

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Questions and Answers

What is the purpose of boolean expressions?

To concatenate strings

To perform arithmetic operations

To evaluate to true or false (correct)

To assign values to variables

Which operator is used for checking if two things are equal in boolean expressions?

== (correct)

In boolean expressions, what does the expression 'N1 * 2' evaluate to if N1 contains 5?

10 (correct)

What is the purpose of relational operators in boolean expressions?

To set up relationships between items in the expression Signup and view all the answers

In C++, which repetition structure is designed to execute the block of code at least once, and then repeat it as long as a specified condition is true?

Do-while statement Signup and view all the answers

What are the essential steps for a repetition structure in C++?

Initialize the loop control variable, check the loop control variable, and change the loop control variable Signup and view all the answers

Which of the following is a correct general form for the while statement in C++?

while(Boolean Expression) { //Executable Statements } Signup and view all the answers

What does the continue statement do in C++?

It skips to the next iteration in the loop Signup and view all the answers

What is the purpose of the break statement in C++?

To jump out of a loop Signup and view all the answers

In C++, what is the purpose of the for statement?

To initialize a loop control variable and execute a block of code based on a condition Signup and view all the answers

Which repetition structure in C++ is designed to execute the block of code at least once, and then repeat it as long as a specified condition is true?

do-while statement Signup and view all the answers

What is the purpose of the break statement in C++?

To jump out of a loop Signup and view all the answers

What is the correct general form for the for statement in C++?

for(initialization; check condition; increment/decrement) { //Executable Statements } Signup and view all the answers

What does the continue statement do in C++?

Breaks one iteration if a specified condition occurs, and continues with the next iteration in the loop Signup and view all the answers

What are the essential steps for a repetition structure in C++?

Initialize the loop control variable, check the loop control variable, execute statements Signup and view all the answers

Which operator is used for checking if two things are equal in boolean expressions in C++?

== Signup and view all the answers

Study Notes

Boolean Expressions

The purpose of boolean expressions is to evaluate conditions and produce a true or false result.
The == operator is used for checking if two things are equal in boolean expressions.
The expression 'N1 * 2' evaluates to 10 if N1 contains 5.

Relational Operators

The purpose of relational operators in boolean expressions is to compare values and produce a true or false result.

Repetition Structures in C++

The do-while repetition structure is designed to execute the block of code at least once, and then repeat it as long as a specified condition is true.
The essential steps for a repetition structure in C++ are: initialization, condition, execution, and increment.
The general form for the while statement in C++ is: while (condition) { statement; }.
The continue statement skips the current iteration and continues with the next iteration.
The break statement exits the repetition structure.
The purpose of the for statement is to execute a block of code repeatedly for a specified number of iterations.

Operators in C++

The == operator is used for checking if two things are equal in boolean expressions in C++.

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Description

Test your understanding of Boolean expressions, relational operators, and the process of selecting between two or more alternative actions. This quiz covers definitions and usage of relational operators like equal, not equal, less than, less than or equal, etc.