Question 1

What will be the final output of the following code snippet when a user enters input values in the order 10, 20, 30, 40, 50, and -1?

Accepted Answer

A) The Average Salary: 0.0 
B) The Average Salary: 30.0 
C) No data! 
D) There will be no output as the code snippet will not compile. 
A) The Average Salary: 0.0 
B) The Average Salary: 30.0 
C) No data! 
D) There will be no output as the code snippet will not compile.

Question 2

In the following code snippet, when does the execution of the program switch from the inner loop to the outer loop?

Accepted Answer

A) when the value of j becomes 6 
B) when the program executes completely 
C) when the condition for the outer loop is met 
D) when the value of i is incremented 
A) when the value of j becomes 6 
B) when the program executes completely 
C) when the condition for the outer loop is met 
D) when the value of i is incremented

Question 3

When will the loop in the following code snippet stop?   I.when the user enters an integer
II.when the user enters an alphabetic character
III.after the user enters 100 numbers

Accepted Answer

A) I or II 
B) II only 
C) III only 
D) II or III 
A) I or II 
B) II only 
C) III only 
D) II or III

Question 4

What is the output of the code snippet given below?

Accepted Answer

A) a 
B) ae 
C) aeiou 
D) aei 
A) a 
B) ae 
C) aeiou 
D) aei

Question 5

When hand-tracing the loop in the code snippet below, which variables are important to evaluate?

Accepted Answer

A) the variables i and j only 
B) the variables i and sum 
C) the variables i, j, and k 
D) Tthe variables j and k only 
A) the variables i and j only 
B) the variables i and sum 
C) the variables i, j, and k 
D) Tthe variables j and k only

Question 6

What is the output of the following code snippet?

Accepted Answer

A)  1 End 
B)  1 End (but the loop is an infinite loop) 
C)  1 2 3 4 5 6 7 8 End 
D)  1 2 3 4 5 6 7 8 End (but the loop is an infinite loop) 
A)  1 End 
B)  1 End (but the loop is an infinite loop) 
C)  1 2 3 4 5 6 7 8 End 
D)  1 2 3 4 5 6 7 8 End (but the loop is an infinite loop)

Question 7

What is the output of the following code snippet?

Accepted Answer

A) 100 
B) 49.50 
C) 60.5 
D) 10 
A) 100 
B) 49.50 
C) 60.5 
D) 10

Question 8

How many times does the following loop execute?

Accepted Answer

A) 10 
B) 9 
C) 8 
D) an infinite number of times 
A) 10 
B) 9 
C) 8 
D) an infinite number of times

Question 9

What is the first and last value of i to be displayed by the following code snippet?

Accepted Answer

A) 0 and 20 
B) 1 and 20 
C) 0 and 19 
D) 1 and 19 
A) 0 and 20 
B) 1 and 20 
C) 0 and 19 
D) 1 and 19

Question 10

What is the output of the code snippet given below?

Accepted Answer

A) no output 
B) 13 
C) 24 
D) 2345 
A) no output 
B) 13 
C) 24 
D) 2345

Question 11

Is the code snippet written below legal? (lines are numbered for reference)

Accepted Answer

A) Yes. 
B) No; there should be a semicolon at the end of line 2. 
C) No; for i = 4, s.substring(i, i + 1) will result in an StringIndexOutOfBounds error. 
D) No; line 4 should have no semicolon at the end. 
A) Yes. 
B) No; there should be a semicolon at the end of line 2. 
C) No; for i = 4, s.substring(i, i + 1) will result in an StringIndexOutOfBounds error. 
D) No; line 4 should have no semicolon at the end.

Question 12

Which of the following for loops is illegal?

Accepted Answer

A) for (int i = 0; ; ) { } 
B) for (int i = 0) { } 
C) for (int i = 0, k = 1; ; i++) { } 
D) for ( ; ; ) 
A) for (int i = 0; ; ) { } 
B) for (int i = 0) { } 
C) for (int i = 0, k = 1; ; i++) { } 
D) for ( ; ; )

Question 13

What is the output of this loop?

Accepted Answer

A) 0 5 10 15 20 25 30 35 40 45 50 55 
B) 0 
C) no output, compilation error 
D) 0 5 10 
A) 0 5 10 15 20 25 30 35 40 45 50 55 
B) 0 
C) no output, compilation error 
D) 0 5 10

Question 14

What is the output of this code snippet?

Accepted Answer

A) 3 4 5 
B) 3 
C) 3 3 3 3 3 ...(infinite loop) 
D) 0 1 2 
A) 3 4 5 
B) 3 
C) 3 3 3 3 3 ...(infinite loop) 
D) 0 1 2

Question 15

What values does counter variable i take on when this loop executes?

Accepted Answer

A) 20, 14, 8, 2 
B) 20, 14, 8, 2, -4 
C) 20, 14, 8 
D) 14, 8, 2 
A) 20, 14, 8, 2 
B) 20, 14, 8, 2, -4 
C) 20, 14, 8 
D) 14, 8, 2

Question 16

What is the output of the code snippet given below?

Accepted Answer

A) no output 
B) 0 2 4 6 8 
C) 10 12 14 16 18 ….(infinite loop) 
D) 0 2 4 6 8 10 12 14 ….(infinite loop) 
A) no output 
B) 0 2 4 6 8 
C) 10 12 14 16 18 ….(infinite loop) 
D) 0 2 4 6 8 10 12 14 ….(infinite loop)

Question 17

What is the output of the following code snippet?

Accepted Answer

A)  1 3 5 7 9 11 13 15 17 19 
B)  1 3 5 7 9 11 13 19 
C)  1 3 5 7 9 11 13 15 17 
D)  1 3 5 7 9 11 13 17 19 
A)  1 3 5 7 9 11 13 15 17 19 
B)  1 3 5 7 9 11 13 19 
C)  1 3 5 7 9 11 13 15 17 
D)  1 3 5 7 9 11 13 17 19

Question 18

Which error type does the "off-by-one" error belong to?

Accepted Answer

A) syntax error 
B) compile-time error 
C) run-time error 
D) infinite loop 
A) syntax error 
B) compile-time error 
C) run-time error 
D) infinite loop

Question 19

What is the output of the following loop?

Accepted Answer

A) 37 
B) 36 
C) 25 
D) 24 
A) 37 
B) 36 
C) 25 
D) 24

Question 20

What is the output of the following code snippet?

Accepted Answer

A) No output because of compilation error. 
B) "Inside the while loop" will be displayed 10 times. 
C) No output after successful compilation. 
D) "Inside the while loop" will be displayed only once. 
A) No output because of compilation error. 
B) "Inside the while loop" will be displayed 10 times. 
C) No output after successful compilation. 
D) "Inside the while loop" will be displayed only once.

Exam 6: Loops

What will be the final output of the following code snippet when a user enters input values in the order 10, 20, 30, 40, 50, and -1?

In the following code snippet, when does the execution of the program switch from the inner loop to the outer loop?

When will the loop in the following code snippet stop? I.when the user enters an integer II.when the user enters an alphabetic character III.after the user enters 100 numbers

What is the output of the code snippet given below?

When hand-tracing the loop in the code snippet below, which variables are important to evaluate?

What is the output of the following code snippet?

What is the output of the following code snippet?

How many times does the following loop execute?

What is the first and last value of i to be displayed by the following code snippet?

What is the output of the code snippet given below?

Is the code snippet written below legal? (lines are numbered for reference)

Which of the following for loops is illegal?

What is the output of this loop?

What is the output of this code snippet?

What values does counter variable i take on when this loop executes?

What is the output of the code snippet given below?

What is the output of the following code snippet?

Which error type does the "off-by-one" error belong to?

What is the output of the following loop?

What is the output of the following code snippet?

Introduction

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