Computer Science for IGCSE & O level - Programming (Section 13)
1
Which of the following are typical components of a file handling process?
إجابة
A
B
C
2
What does the `import java.io.File` statement do in Java?
إجابة
(A)
Imports the file class
3
What happens if you attempt to read from a file that hasn't been opened first?
إجابة
(C)
An error will likely occur.
4
Based on the information given, a one-dimensional array can also be referred to as:
إجابة
(B)
A list
5
Which operator is typically used to represent 'not equal to' in most programming languages?
إجابة
(A)
!=
6
Which of the following components are crucial for the file handling procedure?
إجابة
B
C
D
7
Which of the following statements is true about file storage?
إجابة
B
C
D
8
Which of the following best describes a global variable?
إجابة
(B)
It can be used by any part of the program.
9
What does the `READFILE` statement in the pseudocode signify in the context of file handling?
إجابة
(C)
Reads a line from the file.
10
Which of the following are common data types used in programming?
إجابة
A
B
C
D
11
What does DRY stand for in programming principles?
إجابة
(A)
Don't Repeat Yourself
12
Which of the following is a purpose of comments in the program?
إجابة
(B)
They help in code readability.
13
In the pseudocode, what does the line `AVERAGE = TOTAL / COUNTER` calculate?
إجابة
(C)
The average of the marks.
14
What is the correct keyword for declaring a constant?
إجابة
(C)
CONST
15
What does the program compute after the completion of the outer loop? (FOR Student = 1 TO NumOfStudents)
إجابة
(D)
All of the above
16
Which of the following are important aspects of code readability?
إجابة
A
B
C
17
Which logical operator would result in TRUE only if *both* operands are TRUE?
إجابة
(B)
AND
18
If the value of 'age' is 10 and the following code executes, what will be printed?
```
IF age >= 17
THEN
Print "You are an adult"
ELSE
Print "You are a child"
ENDIF
```
إجابة
(A)
You are a child
19
What is the result if a CASE statement has no matching case, and no default (or ELSE) clause?
إجابة
(C)
The program continues execution after the CASE block.
20
Which of the following is considered a control structure?
إجابة
(C)
Loops
21
What does the `Uppercase` method usually do in string manipulation?
إجابة
(C)
Convert a string to uppercase.
22
What does the term 'scope' refer to in programming?
إجابة
(C)
The part of the program where a variable is accessible.
23
What is typically required before writing to a file in most programming languages?
إجابة
(B)
Opening the file in write mode
24
What is the purpose of comments in programming?
إجابة
(B)
To improve code readability and explain the code.
25
In the pseudocode example, the variable 'COUNTER' is incremented in each iteration. What is the role of COUNTER?
إجابة
(C)
To count the number of marks entered.
26
What will be calculated by the inner loop, for each student, during the nested loop structure?
إجابة
(C)
The sum of all the marks obtained in all subjects.
27
What would be the appropriate data type for the variable used to store a student's name?
إجابة
(C)
STRING
28
What is one of the first steps involved in writing to a file?
إجابة
(C)
Opening the file.
29
What does the 'a' mode stand for when opening a file?
إجابة
(C)
Append mode
30
What is the purpose of comments in a program?
إجابة
(C)
To explain the code to humans.
31
What is the purpose of an algorithm?
إجابة
(B)
To provide a set of instructions to solve a problem.
32
What is a procedure also known as?
إجابة
(C)
A subroutine
33
What operation is performed by the statement `myFile.write('Hello')` in a Python example?
إجابة
(B)
Writing 'Hello' to the file
34
What does the term 'index' refer to within an array?
إجابة
(C)
The position of an element within the array
35
What does the `open()` function typically return when successful?
إجابة
(C)
A file object
36
What does `myFile.readline()` do in Python?
إجابة
(B)
Reads a line from the file
37
What is the function of the `Lowercase` method in string handling?
إجابة
(C)
To convert a string to lowercase.
38
In the provided code, what is the purpose of initializing `ClassHigh` to 0?
إجابة
(C)
To set the starting value for comparing with student marks.
39
What does a "For" loop usually require?
إجابة
(A)
A start value, an end value, and an increment/decrement.
40
What is the purpose of `Input` in the pseudo code?
إجابة
(B)
Takes the input from the user.
41
Which programming construct allows a program to repeat a block of code until a certain condition is met?
إجابة
(B)
Iteration statement
42
Which of the following is NOT a typical action when working with a file?
إجابة
(D)
Sorting
43
In a nested IF-ELSE structure, how are the inner blocks of code related to the outer structure?
إجابة
(B)
The execution of the inner block depends on the condition of the outer block.
44
Which of the following are good practices when working with files?
إجابة
A
C
45
What is the advantage of using meaningful identifiers for variables?
إجابة
(B)
Improves code readability and understanding.
46
Which type of loop is characterized by the condition being evaluated *after* the loop body executes?
إجابة
(B)
Post-condition loop
47
Which part of the program is executed based on the value of 'answer' in the case statement?
إجابة
(B)
The code block associated with the matching case.
48
What does the '%' operator represent in many programming languages?
إجابة
(C)
Modulo (remainder)
49
What is the primary benefit of the 'modular' approach to programming (using procedures and functions)?
إجابة
(D)
It enhances reusability and reduces code duplication.
50
Which is a characteristic of a post-condition loop?
