Question 1

What is the output of the following code snippet?
String someString1 = "his";
String someString2 = "cycle";
If (someString1.compareTo(someString2) < 0)
{
System.out.println(someString2);
}
Else
{
System.out.println(someString1);
}

Accepted Answer

The answer of What is the output of the following...

Question 2

Consider the following code snippet:
Int score = 0;
Double price = 100;
If (score > 0 && price < 200 && price / score > 10)
{
System.out.println("buy");
}
Which of the following statements is true on the basis of this code snippet?

Accepted Answer

The code snippet compiles and runs but there is no output. This is because all three conditions in the if statement must evaluate to true for "buy" to be printed, and the condition price / score > 10 will not be true when score is 0, preventing "buy" from being printed.

Question 3

What is the output of the following code snippet?
Int age = 25;
If (age > 30)
{
System.out.println("You are wise!");
}
Else
{
System.out.println("You have much to learn!");
}

Accepted Answer

As the age is 25 which is not greater than 30, the output will be "You have much to learn!" printed on the console.

Question 4

A store applies a 15 percent service charge on all items with a price of at least $150. No service charge is otherwise applicable. Which of the following DOES NOT correctly compute the service charge?

Accepted Answer

Option B correctly computes the service charge by first multiplying the cost by 0.15 to obtain a service charge of 15% of the cost. If the cost is less than or equal to $150, the service charge is set to 0. This is the correct logic for computing the service charge according to the given conditions. Option A incorrectly initializes the service charge to 0 and only computes the service charge if the cost is greater than or equal to $150, but does not multiply by 0.15. Option C correctly initializes the service charge but does not multiply by 0.15 if the cost is greater than or equal to $150. Option D incorrectly initializes the service charge to 15 and only computes the service charge if the cost is greater than or equal to $150, without multiplying by 0.15.

Question 5

Assuming that a user enters 22 as the price of an object, which of the following hand-trace tables is valid for the given code snippet?
Int price = 0;
String status = "";
Scanner in = new Scanner(System.in);
System.out.print("Please enter object's price: ");
Price = in.nextInt();
If (price >= 50)
{
Status = "reasonable";
If (price >= 75)
{
Status = "costly";
}
}
Else
{
Status = "inexpensive";
If (price <= 25)
{
Status = "reasonable";
}
}

Accepted Answer

The answer of Assuming that a user enters 22 as...

Question 6

Which of the following coding techniques can hand-tracing be applied to?

Accepted Answer

Hand-tracing can be applied to both pseudocode and Java code, as it involves manually following the execution of the code to check for any errors or issues.

Question 7

Assuming that a user enters 10, 20, and 30 as input values one after another, separated by spaces, what is the output of the following code snippet?
Int num1 = 0;
Int num2 = 0;
Int num3 = 0;
Scanner in = new Scanner(System.in);
System.out.print("Enter a number: ");
Num1 = in.nextInt();
System.out.print("Enter a number: ");
Num2 = in.nextInt();
System.out.print("Enter a number: ");
Num3 = in.nextInt();
If (num1 > num2)
{
If (num1 > num3)
{
System.out.println(num1);
}
Else
{
System.out.println(num3);
}
}
Else
{
If (num2 > num3)
{
System.out.println(num2);
}
Else
{
System.out.println(num3);
}
}

Accepted Answer

The answer of Assuming that a user enters 10, 20,...

Question 8

Which of the following conditions tests whether the user enters an integer value that will then be assigned to the floor variable?
Int floor = 0;
Scanner in = new Scanner(System.in);
System.out.print("Floor: ");
( ) . . )
Floor = in.nextInt();

Accepted Answer

The condition "if (in.hasNextInt())" checks whether the user has entered an integer value before assigning it to the floor variable.

Question 9

What is the output of the following code snippet?
Int num = 100;
If (num < 100)
{
If (num < 50)
{
Num = num - 5;
}
Else
{
Num = num - 10;
}
}
Else
{
If (num > 150)
{
Num = num + 5;
}
Else
{
Num = num + 10;
}
}
System.out.println(num);

Accepted Answer

The answer of What is the output of the following...

Question 10

Which of the following operators compare using short-circuit evaluation?

Accepted Answer

The && operator evaluates the second argument only if the first argument is true. This is known as short-circuit evaluation. The other operators listed do not use short-circuit evaluation.

Question 11

Assuming that a valid price should be between 30 and 50, does the following code snippet test this condition correctly?
Final int MIN_PRICE = 30;
Final int MAX_PRICE = 50;
Int price = 0;
Scanner in = new Scanner(System.in);
System.out.print("Please enter the price: ");
Price = in.nextInt();
If (price < MIN_PRICE)
{
System.out.println("Error: The price is too low.");
}
Else if (price > MAX_PRICE)
{
System.out.println("Error: The price is too high.");
}
Else
{
System.out.println("The price entered is in the valid price range.");
}

Accepted Answer

The code snippet checks if the price is less than the minimum price (30) or greater than the maximum price (50). If the price is within the range of 30 to 50, the third branch is executed, which indicates that the price entered is in the valid price range. Therefore, the code snippet correctly tests whether the price value is within the range of 30 to 50.

Question 12

Assuming that a user enters 45, 78, and then 12, what is the output of the following code snippet?
Int num1 = 0;
Int num2 = 0;
Int num3 = 0;
Scanner in = new Scanner(System.in);
System.out.print("Enter a number: ");
Num1 = in.nextInt();
System.out.print("Enter a number: ");
Num2 = in.nextInt();
System.out.print("Enter a number: ");
Num3 = in.nextInt();
If (!(num1 > num2 && num1 > num3))
{
System.out.println(num1);
}
Else if (!(num2 > num1 && num2 > num3))
{
System.out.println(num2);
}
Else if (!(num3 > num1 && num3 > num2))
{
System.out.println(num3);
}

Accepted Answer

The answer of Assuming that a user enters 45, 78,...

Question 13

What is the output of the following code snippet?
Int x = 50;
If (x > 100)
{
X++;
}
Else
{
X--;
}
System.out.println(x);

Accepted Answer

The answer of What is the output of the following...

Question 14

What is the output of the following code snippet?
Int digit = 500;
If (digit != 500)
{
System.out.println("500");
}
Else
{
System.out.println("Not 500");
}

Accepted Answer

The code snippet initializes a variable digit with a value of 500. It then checks if the value of digit is not equal to 500. Since the value of digit is 500, the condition is false and the code inside the if block is not executed. The code inside the else block is executed, which prints "Not 500" to the console. Therefore, the output of the code snippet is "Not 500".

Question 15

Which of the following options checks that city is neither Chicago nor Dallas?

Accepted Answer

Option B checks if the city is not Chicago or Dallas by using the logical operator `||` which means or. The expression inside the parenthesis will be true if the city is not Chicago OR it is not Dallas. The `!` before the expression negates the result which means it will be true only if the expression is false (i.e., the city is neither Chicago nor Dallas).

Question 16

Assuming that the user provides 49 as input, what is the output of the following code snippet?
Int x = 0;
Int y = 0;
System.out.print("Please enter y: ");
Scanner in = new Scanner(System.in);
Y = in.nextInt();
If (y > 50);
{
X = y;
}
System.out.println("x: " + x);

Accepted Answer

The answer of Assuming that the user provides 49 as...

Question 17

Which of the following options refers to the technique of simulating program execution on a sheet of paper?

Accepted Answer

Tracing involves manually simulating program execution on paper by following the code line by line and keeping track of the values of variables and the state of the program at each step. Compiling involves translating source code into machine code, prototyping involves creating a basic working model of a program, and debugging involves identifying and fixing errors in a program.

Question 18

Which of the following statements can be used to validate that the user input for the floor variable is between 0 and 20 inclusive?

Accepted Answer

Option A uses the correct logical operator (&&) to check if the floor variable is both greater than or equal to 0 and less than or equal to 20. This ensures that the input is within the range of 0 to 20 inclusive. Option B uses the logical operator (||), which is incorrect because it will accept any value that is either greater than or equal to 0 or less than or equal to 20, including negative values or values greater than 20. Option C uses the incorrect logical operators (<= and >=) and reverses the inequality signs, which means that it checks if the input is less than or equal to 0 and greater than or equal to 20, which can never be true. Option D uses the incorrect logical operator (||) and reverses the inequality signs, which is similar to option C and is therefore incorrect.

Question 19

Assuming that the user provides 3 as input, what is the output of the following code snippet?
Int x;
Int y;
X = 0;
System.out.print("Please enter y: ");
Scanner in = new Scanner(System.in);
Y = in.nextInt();
If (y > 0)
{
X = 2 * y;
}
Else
{
X = 2 + x;
}
System.out.println("x: " + x);

Accepted Answer

The answer of Assuming that the user provides 3 as...

Question 20

What is the output of the following code snippet?
Double salary = 55000;
Double cutOff = 65000;
Double minSalary = 40000;
If (minSalary > salary)
{
System.out.println("Minimum salary requirement is not met.");
}
If (cutOff < salary)
{
System.out.println("Maximum salary limit is exceeded.");
}
Else
{
System.out.println("Salary requirement is met.");
}

Accepted Answer

The salary is 55000, which is greater than the minimum salary of 40000 and less than the cutoff of 65000, so the output will be "Salary requirement is met."

Quiz 3: Decisionseasy

What is the output of the following code snippet? String someString1 = "his"; String someString2 = "cycle"; If (someString1.compareTo(someString2) < 0) { System.out.println(someString2) ; } Else { System.out.println(someString1) ; }

Consider the following code snippet: Int score = 0; Double price = 100; If (score > 0 && price < 200 && price / score > 10) { System.out.println("buy") ; } Which of the following statements is true on the basis of this code snippet?

What is the output of the following code snippet? Int age = 25; If (age > 30) { System.out.println("You are wise!") ; } Else { System.out.println("You have much to learn!") ; }

A store applies a 15 percent service charge on all items with a price of at least $150. No service charge is otherwise applicable. Which of the following DOES NOT correctly compute the service charge?

Which of the following coding techniques can hand-tracing be applied to?

Which of the following conditions tests whether the user enters an integer value that will then be assigned to the floor variable? Int floor = 0; Scanner in = new Scanner(System.in) ; System.out.print("Floor: ") ; ( ) . . ) Floor = in.nextInt() ;

What is the output of the following code snippet? Int num = 100; If (num < 100) { If (num < 50) { Num = num - 5; } Else { Num = num - 10; } } Else { If (num > 150) { Num = num + 5; } Else { Num = num + 10; } } System.out.println(num) ;

Which of the following operators compare using short-circuit evaluation?

What is the output of the following code snippet? Int x = 50; If (x > 100) { X++; } Else { X--; } System.out.println(x) ;

What is the output of the following code snippet? Int digit = 500; If (digit != 500) { System.out.println("500") ; } Else { System.out.println("Not 500") ; }

Which of the following options checks that city is neither Chicago nor Dallas?

Assuming that the user provides 49 as input, what is the output of the following code snippet? Int x = 0; Int y = 0; System.out.print("Please enter y: ") ; Scanner in = new Scanner(System.in) ; Y = in.nextInt() ; If (y > 50) ; { X = y; } System.out.println("x: " + x) ;

Which of the following options refers to the technique of simulating program execution on a sheet of paper?

Which of the following statements can be used to validate that the user input for the floor variable is between 0 and 20 inclusive?

Assuming that the user provides 3 as input, what is the output of the following code snippet? Int x; Int y; X = 0; System.out.print("Please enter y: ") ; Scanner in = new Scanner(System.in) ; Y = in.nextInt() ; If (y > 0) { X = 2 * y; } Else { X = 2 + x; } System.out.println("x: " + x) ;