Java Selection Structures Quiz

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What is the purpose of the if-else statement in Sample Program 1?

To check if the number entered is a positive value

To check if the number entered is zero (correct)

To print an error message if the number entered is invalid

To check if the number entered is a negative value

What will be the output of Sample Program 1 if the user enters 5?

Number entered is zero

5 is a positive value (correct)

An error message is printed

5 is a negative value

What is the purpose of the else-if statement in Alternative Program 2?

To print an error message if the number entered is invalid

To check if the number entered is a positive value

To check if the number entered is zero (correct)

To check if the number entered is a negative value

If the user inputs -8 in Sample Program 2, what will be the output?

-8 is a negative value Signup and view all the answers

What will Sample Program 2 display as output if the user enters 0?

Number entered is zero Signup and view all the answers

What would happen if 'number' is not declared or initialized before using it in Sample Program 2?

It will print an error message Signup and view all the answers

What is the purpose of the 'else-if' statement in Java?

To execute a statement if none of the previous 'if' or 'else-if' conditions are true Signup and view all the answers

What does the final 'else' statement act as in a sequence of conditional tests?

Default condition when all other conditional tests fail Signup and view all the answers

What is the purpose of using logical operators in conditional statements in Java?

To allow more than one criteria in a conditional statement Signup and view all the answers

In a Java 'if' statement, what is the role of the logical operator '&&'?

Returns true if both Condition A and B are true Signup and view all the answers

What is the significance of the order of evaluation in logical operators in Java?

It determines which expression is evaluated first Signup and view all the answers

What does the '||' logical operator return in a Java 'if' statement?

True if either Condition A or B is true, or both are true Signup and view all the answers

In Java, when using the logical operator '!', what is the result if Condition A is true?

False Signup and view all the answers

What does the logical expression 'num1 > 16 && num1 < 20 || num2 == 20 && (num2 > 10 || num2 < 5)' return?

True if either set of conditions (separated by &&) are true Signup and view all the answers

What is the purpose of using multiple comparisons with 'else-if' structure in Java?

To allow ordering of execution based on multiple criteria Signup and view all the answers

What happens when a sequence of 'else-if' statements are evaluated and a true condition is found?

The statement associated with the true condition is executed and the rest of the chain is bypassed. Signup and view all the answers

What is considered to be the default condition when all other conditional tests fail in Java?

The final 'else' statement Signup and view all the answers

In a truth table for logical operators, what does p && q return when p = F and q = F?

F (False) Signup and view all the answers

Java Selection Structures Quiz

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Questions and Answers

What is the purpose of the if-else statement in Sample Program 1?

What will be the output of Sample Program 1 if the user enters 5?

What is the purpose of the else-if statement in Alternative Program 2?

If the user inputs -8 in Sample Program 2, what will be the output?

What will Sample Program 2 display as output if the user enters 0?

What would happen if 'number' is not declared or initialized before using it in Sample Program 2?

What is the purpose of the 'else-if' statement in Java?

What does the final 'else' statement act as in a sequence of conditional tests?

What is the purpose of using logical operators in conditional statements in Java?

In a Java 'if' statement, what is the role of the logical operator '&&'?

What is the significance of the order of evaluation in logical operators in Java?

What does the '||' logical operator return in a Java 'if' statement?

In Java, when using the logical operator '!', what is the result if Condition A is true?

What does the logical expression 'num1 > 16 && num1 < 20 || num2 == 20 && (num2 > 10 || num2 < 5)' return?

What is the purpose of using multiple comparisons with 'else-if' structure in Java?

What happens when a sequence of 'else-if' statements are evaluated and a true condition is found?

What is considered to be the default condition when all other conditional tests fail in Java?

In a truth table for logical operators, what does p && q return when p = F and q = F?

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