Software Engineering-I MCQs with Answers
Practice important Software Engineering-I MCQs with answers and explanations.
Chapter: 30
Q541:
In a queue implementation, the operation to add an element should check if the queue is:
A. Empty
B. Full
C. Both
D. Neither
Correct Answer:
B
Chapter: 30
Q542:
What does the following line of code accomplish? x *= a;
A. Multiplies x by a
B. Divides x by a
C. Adds a to x
D. None of the above
Correct Answer:
A
Chapter: 30
Q543:
Which of the following is not recommended for code clarity?
A. Using clear variable names
B. Breaking down complex expressions
C. Using cryptic code
D. Using comments for clarity
Correct Answer:
C
Chapter: 30
Q544:
How can the expression to check if a year is a leap year be simplified for clarity?
A. leapYear = year % 4 == 0 && year % 100 != 0 || year % 400 == 0;
B. leapYear = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
C. leapYear = year % 4 == 0;
D. leapYear = (year % 4) && (year % 100) && (year % 400);
Correct Answer:
B
Chapter: 30
Q545:
What does the % operator do in the context of queue operations?
A. Shifts elements
B. Checks size
C. Wraps around index
D. Divides numbers
Correct Answer:
C
Chapter: 31
Q546:
What is the primary purpose of using a switch statement in programming?
A. To iterate through a loop
B. To make decisions based on multiple conditions
C. To handle errors
D. To define functions
Correct Answer:
B
Chapter: 31
Q547:
In the given code, what is the role of the break statement in the switch case?
A. To exit the loop
B. To terminate the program
C. To prevent fall-through and exit the switch case
D. Both A and B
Correct Answer:
D
Chapter: 31
Q548:
What is a magic number in programming?
A. A specific numeric value with a clear meaning
B. A number used without explanation that makes code harder to understand
C. A constant value defined in an enumeration
D. None of the above
Correct Answer:
B
Chapter: 31
Q549:
Why is it important to avoid using magic numbers in code?
A. It makes the code faster
B. It's easier to modify and understand the code
C. They are always incorrect
D. None of the above
Correct Answer:
B
Chapter: 31
Q550:
What should be used instead of magic numbers for better code readability?
A. Arbitrary numeric values
B. Constants with meaningful names
C. Inline comments
D. None of the above
Correct Answer:
B
Chapter: 31
Q551:
The statement "flag = 0;" is considered bad practice because:
A. It is ambiguous
B. It's always wrong
C. It's a magic number
D. None of the above
Correct Answer:
A
Chapter: 31
Q552:
What is the effect of using the number 0 in a C/C++ program?
A. It can cause logical errors
B. It can lead to undefined behavior
C. It may be misinterpreted as a boolean value
D. None of the above
Correct Answer:
C
Chapter: 31
Q553:
In the code provided, what does the variable 'fac' represent?
A. A factor for limiting iterations
B. A flag for boolean conditions
C. The maximum value of a column
D. None of the above
Correct Answer:
A
Chapter: 31
Q554:
Which of the following statements about coding style guidelines is true?
A. Magic numbers improve code readability
B. Using symbols instead of numbers clarifies intent
C. Comments should be avoided
D. All of the above
Correct Answer:
B
Chapter: 31
Q555:
In the context of the provided code, what is the significance of using 'enum'?
A. It defines constants with meaningful names
B. It's used for error handling
C. It's a deprecated feature
D. None of the above
Correct Answer:
A
Chapter: 31
Q556:
Using explicit values in code enhances __________.
A. Performance
B. Readability
C. Complexity
D. None of the above
Correct Answer:
B
Chapter: 31
Q557:
The code segment that uses 'if' statements is preferred over 'switch' cases because:
A. It is easier to read and understand
B. It runs faster
C. It uses less memory
D. None of the above
Correct Answer:
A
Chapter: 31
Q558:
What is the main drawback of using fall-through in switch statements?
A. It can lead to unexpected behavior
B. It improves performance
C. It is always intentional
D. None of the above
Correct Answer:
A
Chapter: 31
Q559:
In the corrected code segment, what is the first action taken when 'c' is equal to '-'?
A. Nothing happens
B. sign is set to -1
C. c is set to getchar()
D. both A and B
Correct Answer:
D
Chapter: 31
Q560:
What does the line 'star = (let[i] == 0) ? ' ' : '*';' represent in the provided code?
A. A standard assignment operation
B. A conditional operator (ternary)
C. Both A and B
D. None of the above
Correct Answer:
B