Computer Science for IGCSE & O level - Programming (Section 4)

1
What is the value of `x` after the code: `x = 5; x += 3;`?
उत्तर
(D)
8
2
What is the output when using the code: `print "Computer".Substring(3,4)`?
उत्तर
(D)
mpute
3
What is a disadvantage of using global variables extensively?
उत्तर
(B)
They can be easily accessed by any part of the program, leading to potential unintended modifications.
4
Which programming concept allows a program to make decisions?
उत्तर
(B)
Selection
5
Which of the following features are parts of an algorithm?
उत्तर
A
B
C
D
6
What is the primary goal of program documentation?
उत्तर
(B)
To make the code more readable.
7
What does the acronym 'GUI' stand for?
उत्तर
(B)
Graphical User Interface
8
Which of the following is a characteristic of a good programming practice?
उत्तर
(C)
Giving descriptive names to variables
9
What will `print("Python"[2:])` output?
उत्तर
(C)
thon
10
In a pseudo-code program, what is the purpose of a PROCEDURE?
उत्तर
(B)
To group a set of statements to perform a specific task.
11
What data structure is described as containing several elements of the same data type, where each element can be accessed using the same identifier name?
उत्तर
(B)
Array
12
What is the function of `OUTPUT` in programming?
उत्तर
(B)
To display data to the user.
13
Which of the following is NOT a common string method?
उत्तर
(C)
Append
14
In the context of programming, what is a 'bug'?
उत्तर
(B)
An error in the code.
15
What does the algorithm need in order to do output?
उत्तर
(B)
Input
16
Which data type would be most appropriate for storing the number of students in a class?
उत्तर
(D)
INTEGER
17
Which is the correct syntax to call a procedure named 'CalculateMarks'?
उत्तर
(B)
CALL CalculateMarks
18
What type of statement allows a program to choose between different actions based on a condition?
उत्तर
(B)
Selection Statement
19
What does 'scope' refer to in relation to variables?
उत्तर
(B)
Where a variable is accessible within the code.
20
Which programming paradigm is likely being used based on the presented examples?
उत्तर
(C)
Procedural Programming
21
What is the purpose of the `+=` operator in Python (or similar operators in other languages)?
उत्तर
(C)
To add a value to a variable and assign the result to the same variable.
22
What does the term 'sequence' refer to in the context of an algorithm?
उत्तर
(B)
The order in which steps are executed.
23
What is the role of a parameter within a function or procedure?
उत्तर
(C)
To receive data that is passed into the function or procedure.
24
What is the role of the `DIV` library routine?
उत्तर
(B)
To return the quotient (whole number) of a division.
25
Why is it beneficial to use descriptive identifier names?
उत्तर
(C)
It improves the code's readability and maintainability.
26
In the context of programming, what does 'modularity' refer to?
उत्तर
(C)
Breaking down a program into smaller, self-contained, and reusable modules.
27
What type of loop is used to repeat a block of code as long as a condition is true?
उत्तर
(B)
WHILE loop
28
Which string function is typically used to locate a specified character or substring within a string?
उत्तर
(C)
Index or Find
29
What does the term 'index' refer to when discussing arrays?
उत्तर
(C)
The location of an element within the array.
30
What is the purpose of debugging in programming?
उत्तर
(B)
To test and fix errors in the code.
31
In the provided pseudo-code snippets, what does the constant `NumberSubjects` likely represent?
उत्तर
(C)
The total number of subjects a student is taking.
32
What is the correct data type for a value that can store decimal numbers?
उत्तर
(D)
Double/Real
33
In the context of the program, what does the constant `NumberSubjects` likely represent?
उत्तर
(B)
The number of subjects a student takes.
34
In the provided context of student mark calculations, what is the likely purpose of the variable `studentTotal`?
उत्तर
(B)
The total marks obtained by a student.
35
What is the main role of a programming language's syntax?
उत्तर
(A)
To define the rules for writing valid statements.
36
What data type is typically used to store a whole number?
उत्तर
(B)
Integer
37
What does the assignment operator do?
उत्तर
(C)
Assigns a value to a variable
38
What is the term for the process of repeating a set of instructions in a program?
उत्तर
(B)
Iteration
39
Which of the following is an example of a logical operator?
उत्तर
(C)
AND
40
Which of the following best describes an 'algorithm'?
उत्तर
(B)
A set of instructions for a specific task.
41
Which one is a comment feature in the Python language?
उत्तर
(C)
'# '
42
What is the purpose of an 'IF' statement in programming?
उत्तर
(B)
To make decisions based on a condition.
43
What does the acronym "GUI" stand for?
उत्तर
(A)
Graphical User Interface
44
In pseudo code, what is the purpose of the keyword "OUTPUT"?
उत्तर
(B)
To display information to the user.
45
In the provided pseudocode, what does the value 999 represent?
उत्तर
(C)
A delimiter to finish the loop
46
What is the purpose of indentation in Python?
उत्तर
(D)
All of the above
47
What is the range of values for a boolean data type?
उत्तर
(B)
True or False
48
What is the output of the code: `print(type(True))`
उत्तर
(C)
49
What does the term 'selection' refer to in programming?
उत्तर
(C)
Choosing different paths of code execution.
50
If a function needs to return multiple values, what is one common way to achieve this in programming?
उत्तर
(C)
Return a single array or object containing the multiple values.