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