chapter 4

1. 1. What is the purpose of relational operators?

• A) To compare values

• B) To define variables

• C) To loop through conditions

• D) To assign values

2. 2. Which relational operator is used to check if two values are equal?

• A) =

• B) ==

• C) !=

• D) >=

3. 3. Which statement is true about an if statement?

• A) It always executes a block of code.

• B) It executes a block of code only if a condition is true.

• C) It executes a block of code only if a condition is false.

• D) It executes a block of code regardless of the condition.

4. 4. What does the else part of an if/else statement do?

• A) It executes when the if condition is true.

• B) It executes when the if condition is false.

• C) It always executes after the if block.

• D) It loops back to the if statement.

5. 5. What happens if a break statement is omitted in a switch statement?

• A) The program stops.

• B) The program "falls through" and executes subsequent cases.

• • C) The program loops back to the beginning.

• D) The program exits the loop.

6. 6. Which logical operator checks if both conditions are true?

• A) &&

• B) ||

• C) !

• D) ==

7. 7. In an if/else if statement, which block executes when none of the conditions are true?

• A) The first else if block.

• B) The else block.

• C) The second if block.

• D) None of the blocks.

8. 8. Which operator reverses the truth value of an expression?

• A) &&

• B) ||

• C) !

• D) ==

9. 9. What is the correct syntax to declare a switch statement in C++?

• A) switch(expression) { case x: statement; }

• B) switch: case(expression) { statement; }

• C) switch (expression) { if x: statement; }

• D) switch (expression) case x: statement;

10. 10. What is input validation in programming?

• A) Verifying that user input is of the correct type and within the acceptable range.

• B) Asking for user input multiple times.

• C) Checking for errors in the program's logic.

• D) Storing input in variables.