18 Questions
What is the purpose of the if-else statement in Sample Program 1?
To check if the number entered is zero
What will be the output of Sample Program 1 if the user enters 5?
5 is a positive value
What is the purpose of the else-if statement in Alternative Program 2?
To check if the number entered is zero
If the user inputs -8 in Sample Program 2, what will be the output?
-8 is a negative value
What will Sample Program 2 display as output if the user enters 0?
Number entered is zero
What would happen if 'number' is not declared or initialized before using it in Sample Program 2?
It will print an error message
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
What does the final 'else' statement act as in a sequence of conditional tests?
Default condition when all other conditional tests fail
What is the purpose of using logical operators in conditional statements in Java?
To allow more than one criteria in a conditional statement
In a Java 'if' statement, what is the role of the logical operator '&&'?
Returns true if both Condition A and B are true
What is the significance of the order of evaluation in logical operators in Java?
It determines which expression is evaluated first
What does the '||' logical operator return in a Java 'if' statement?
True if either Condition A or B is true, or both are true
In Java, when using the logical operator '!', what is the result if Condition A is true?
False
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
What is the purpose of using multiple comparisons with 'else-if' structure in Java?
To allow ordering of execution based on multiple criteria
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.
What is considered to be the default condition when all other conditional tests fail in Java?
The final 'else' statement
In a truth table for logical operators, what does p && q return when p = F and q = F?
F (False)
Test your knowledge of Java selection structures including if-else if-else and switch. This quiz covers sequence, selection, and iteration/repetition structures with a sample program for practice.
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