Computer Science for IGCSE & O level - Programming (Section 9)
1
What do parameters do in functions or procedures?
Answer
(B)
They receive data passed into the function or procedure.
2
In the context of file handling, what does 'WRITE' typically signify?
Answer
(D)
Write data into a file.
3
What is the primary purpose of storing data in a file?
Answer
(B)
To store data persistently for later use.
4
Which statement is used to select one option out of multiple options?
Answer
(C)
CASE statement
5
What is the name for a named storage location in a computer's memory?
Answer
(B)
Variable
6
What is the result of this comparison: `5 <= 5`?
Answer
(A)
True
7
What is a common characteristic of a well-designed algorithm?
Answer
(C)
It should be efficient and solve the problem correctly.
8
What is the benefit of using comments in code?
Answer
A
B
9
What is the purpose of the `ELSE` statement in an `IF` statement?
Answer
(B)
To specify the actions to be taken if the `IF` condition is false.
10
Which of the following are important aspects when writing a file?
Answer
A
B
C
11
What is the primary function of a loop in programming?
Answer
(B)
To execute a block of code repeatedly.
12
If you wanted to store the ages of students and their corresponding grades in an organized format, what type of structure would you use?
Answer
(C)
A two-dimensional array.
13
If `Value1 = MOD(20, 3)`, what is the value of `Value1`?
Answer
(D)
2
14
What is the result of the following operation: 10 % 3?
Answer
(A)
1
15
What is the primary difference between an `INTEGER` and a `REAL` data type?
Answer
(B)
INTEGER stores whole numbers, REAL stores numbers with decimal points.
16
In the context of programming, what is a variable?
Answer
(B)
A named data store that holds a value that can change.
17
Which statement is used in programming to execute a block of code multiple times?
Answer
(D)
FOR, WHILE
18
What is the purpose of a 'loop' in programming?
Answer
(B)
To execute a block of code repeatedly.
19
What is the role of comments in a program?
Answer
(C)
To explain the code to humans.
20
Which data type is most suitable for storing True/False values?
Answer
(C)
Boolean
21
What is a step-by-step set of instructions used for solving a problem?
Answer
(C)
An algorithm.
22
What does the term "iteration" primarily refer to in programming?
Answer
(B)
The repetition of a set of instructions
23
Why is it important to use clear and meaningful identifiers (variable names, function names, etc.)?
Answer
(C)
To improve the code's readability and maintainability.
24
Which of the following statements represents an input operation?
Answer
(B)
name = input()
25
What is the purpose of a 'comment' in a program?
Answer
(B)
To provide an explanation or description of the code.
26
Which of the following best describes the purpose of comments in code?
Answer
(C)
To provide documentation for the code.
27
Which of the following is a characteristic of high-level programming languages?
Answer
B
C
28
What does an IDE primarily offer to programmers?
Answer
A
B
C
29
What would be an appropriate data type to store a person's name?
Answer
(C)
String
30
Which statement represents a logical decision in a program?
Answer
(C)
IF x > 10 THEN
31
Which of these elements can be found in a procedure definition?
Answer
A
B
D
32
In the context of arrays, what does the term "index" refer to?
Answer
(C)
The position of each element within the array.
33
What keyword is commonly used to start a comment in Python, based on the provided examples?
Answer
(C)
#
34
Which string method is used to find the number of characters in a string?
Answer
(A)
Length
35
What is the role of the `NumOfSubjects` constant in the code?
Answer
(C)
To set a fixed value for a number of subjects.
36
What is the process of finding and fixing errors in a program called?
Answer
(B)
Debugging
37
What are the key components of a standard programming environment?
Answer
(A)
Text editor, compiler, and debugger
38
If the 'age' input is 20, what output will the following code produce?
```
IF age >= 17
THEN
Print "You are an adult"
ELSE
Print "You are a child"
ENDIF
```
Answer
(B)
You are an adult
39
What does the MOD function calculate in programming?
Answer
(C)
The remainder of a division.
40
What is a key benefit of using nested statements (e.g., an IF statement inside another IF statement)?
Answer
(C)
It allows for more complex and detailed logic.
41
What does the following Python code do? `myFile = open('myText.txt', 'r')`
Answer
(B)
Opens a file named 'myText.txt' for reading.
42
Which string method can be used to find the location of a certain character in a string?
Answer
(C)
Find
43
Which is true about nesting selection statements?
Answer
(B)
It can enhance code's modularity and structure.
44
What is the purpose of the 'length' string function?
Answer
(B)
To return the number of characters in a string.
45
What is a key characteristic of a procedure, as described in the provided text?
Answer
(C)
It is a set of programming statements grouped together under a single name.
46
What is a 'subroutine' also known as?
Answer
(C)
Function or Procedure
47
What is the objective of the 'Worked example' at the beginning of the document?
Answer
(B)
To calculate and output statistics for a class of students.
48
Which character is typically used as the multiplication operator?
Answer
(B)
*
49
In the pseudocode example for writing to a file, which command is used to write a line of text?
