Question 1

This is an international coding system that is extensive enough to represent all the characters of all the world's alphabets:

Accepted Answer

Unicode is an international coding system that includes characters from all major languages and scripts of the world, including Latin, Greek, Cyrillic, Hebrew, Arabic, Chinese, Japanese, and Korean. It supports over 128,000 characters and is widely used for encoding text in modern applications and operating systems. ASCII is a more limited encoding system that only supports standard English characters, while Java is a programming language that is not directly related to encoding text.

Question 2

What will be the value of x after the following code is executed?
Int x = 75;
Int y = 60;
If (x > y)
X = x - y;

Accepted Answer

Since x is greater than y, the if statement is true and x will be assigned the value of x-y, which is 15. Thus, the answer is B.

Question 3

If chr is a character variable, which of the following if statements is written correctly?

Accepted Answer

D

Question 4

What will be the value of ans after the following code has been executed?
Int ans = 10;
Int x = 65;
Int y = 55;
If (x >= y)
Ans = x + y;

Accepted Answer

The condition (x >= y) is true since 65 is greater than 55, so the code inside the if statement executes, setting ans to x + y, which is 65 + 55 = 120.

Question 5

In most editors, you are indenting by one level each time that you press this key:

Accepted Answer

In most editors, the default behavior when pressing the Tab key is to indent the current line or the selected lines by one level. This is a commonly used feature when writing code or organizing text in a hierarchical structure. Using Shift, Alt or Space may have other functions in editors, but they are not typically used for indentation.

Question 6

What would be the value of bonus after the following statements are executed?
Int bonus, sales = 1250;
If (sales > 1000)
Bonus = 100;
If (sales > 750)
Bonus = 50;
If (sales > 500)
Bonus = 25;
Else
Bonus = 0;

Accepted Answer

The conditions are checked sequentially, and since all conditions are true, the last executed assignment is `Bonus = 25;`.

Question 7

This type of operator determines whether a specific relationship exists between two values:

Accepted Answer

Relational operators are used to compare two values and determine the kind of relationship they have (e.g., greater than, less than, equal to, not equal to).

Question 8

What would be the value of bonus after the following statements are executed?
Int bonus, sales = 85000;
Char dept = 'S';
If (sales > 100000)
If (dept == 'R')
Bonus = 2000;
Else
Bonus = 1500;
Else if (sales > 75000)
If (dept == 'R')
Bonus = 1250;
Else
Bonus = 1000;
Else
Bonus = 0;

Accepted Answer

Since sales is 85000 and dept is 'S', the condition (sales > 75000) is true, and since dept is not 'R', the bonus is set to 1000.

Question 9

In Java, when a character is stored in memory, it is actually stored as a(n):

Accepted Answer

Java uses Unicode character encoding which represents each character as a unique number. This allows for the representation of a wide range of characters from different languages and scripts. ASCII and EBCDIC are character encodings used in older computer systems, and Morse code is a binary code used for transmitting messages through a series of dots and dashes.

Question 10

The ________ statement is used to make simple decisions in Java.

Accepted Answer

The if statement in Java is used to make simple decisions. It allows the code to make a decision and execute one block of code if the condition is true, and another block of code if the condition is false.

Question 11

Which of the following is the correct boolean expression to test for: int x being a value between, but not including, 500 and 650, or int y not equal to 1000?

Accepted Answer

Option C expresses the correct boolean expression that tests whether int x is a value between, but not including, 500 and 650 or int y is not equal to 1000. The expression uses the logical OR operator to link the two conditions, which means that either of them could be true or both at the same time.

Question 12

A block of code is enclosed in a set of:

Accepted Answer

A block of code is typically enclosed in a set of curly braces {}, also known as curly brackets. These braces define the beginning and end of a block of code, and indicate to the compiler or interpreter which lines of code are included in that block.

Question 13

A flag may have the values:

Accepted Answer

The answer of A flag may have the values:
...

Question 14

What will be the value of ans after the following code has been executed?
Int x = 90, y = 55, ans = 10;
If ( x == y);
Ans *= 2;

Accepted Answer

The answer of What will be the value of ans...

Question 15

A Boolean expression is one that is either:

Accepted Answer

Boolean expressions are logical expressions that evaluate to either true or false. Therefore, option A "true or false" is the only correct choice. Option B is incorrect because it is not a Boolean expression but a choice between two variables. Option C is incorrect because it refers to positivity or negativity, which are not logical conditions. Option D is incorrect because it doesn't provide any relevant options.

Question 16

Which one of the following is the not equal operator?

Accepted Answer

The not equal operator is represented by "!=" in programming languages, not by any of the other symbols or keywords listed. Therefore, the correct choice is D.

Question 17

Which of the following expressions will determine whether x is less than or equal to y?

Accepted Answer

The expression "x <= y" is the correct syntax for determining whether x is less than or equal to y. Option A ("x > y") is the opposite of what is being asked, option B ("x =< y") is not a valid syntax and option D ("x >= y") determines if x is greater than or equal to y.

Question 18

What will be the values of ans, x, and y after the following statements are executed?
Int ans = 35, x = 50, y =50;
If ( x >= y)
{
Ans = x + 10;
X -=y;
}
Else
{
Ans = y + 10;
Y += x;
}

Accepted Answer

Since x is equal to y, the condition (x >= y) is true, so the first block executes: ans becomes 60 (x + 10), and x becomes 0 (x - y).

Question 19

What will be the value of bonus after the following code is executed?
Int bonus, sales = 10000;
If (sales < 5000)
Bonus = 200;
Else if (sales < 7500)
Bonus = 500;
Else if (sales < 10000)
Bonus = 750;
Else if (sales < 20000)
Bonus = 1000;
Else
Bonus = 1250;

Accepted Answer

The sales value is 10000, which falls in the range of 10000 to 19999, so the bonus will be set to 1000.

Question 20

If you prematurely terminate an if statement with a semicolon, the compiler will:

Accepted Answer

A semicolon after an if statement is interpreted as a null statement, so the compiler does not display an error message and assumes a null statement is intended.

Quiz 3: Decision Structures

This is an international coding system that is extensive enough to represent all the characters of all the world's alphabets:

What will be the value of x after the following code is executed? Int x = 75; Int y = 60; If (x > y) X = x - y;

If chr is a character variable, which of the following if statements is written correctly?

What will be the value of ans after the following code has been executed? Int ans = 10; Int x = 65; Int y = 55; If (x >= y) Ans = x + y;

In most editors, you are indenting by one level each time that you press this key:

What would be the value of bonus after the following statements are executed? Int bonus, sales = 1250; If (sales > 1000) Bonus = 100; If (sales > 750) Bonus = 50; If (sales > 500) Bonus = 25; Else Bonus = 0;

This type of operator determines whether a specific relationship exists between two values:

What would be the value of bonus after the following statements are executed? Int bonus, sales = 85000; Char dept = 'S'; If (sales > 100000) If (dept == 'R') Bonus = 2000; Else Bonus = 1500; Else if (sales > 75000) If (dept == 'R') Bonus = 1250; Else Bonus = 1000; Else Bonus = 0;

In Java, when a character is stored in memory, it is actually stored as a(n) :