Computer Science for IGCSE & O level - Programming (Section 14)
1
What type of programming statements allows the program to execute different blocks of code based on certain conditions?
Answer
(C)
Selection statements
2
Which of the following is NOT a characteristic of a function in the context of the given material?
Answer
(D)
A function can't have parameters.
3
Which of the following is NOT a string handling method?
Answer
(D)
Multiply
4
What is the purpose of the line: `ClassHigh = 0` in the beginning of the provided code example?
Answer
(A)
To initialize the variable ClassHigh.
5
Which of the following are examples of standard library routines, based on the text?
Answer
A
B
6
What is a characteristic of a pre-condition loop?
Answer
(C)
The condition is checked *before* each iteration.
7
If the function is defined with parameters, what should the call match?
Answer
(A)
Argument should match parameters.
8
Which of the following data types can store true or false values?
Answer
(C)
Boolean
9
What does the pseudocode example `INPUT myText;` do?
Answer
(C)
Takes input from the user and stores it in a variable called 'myText'.
10
Based on the image, arrays can be:
Answer
A
B
11
How do you call a procedure or function with parameters?
Answer
A
B
C
12
Which of these are important features when writing a file?
Answer
A
C
D
13
What are the main components usually found in a "For" loop structure?
Answer
A
B
C
14
What does the acronym 'IDE' stand for?
Answer
(B)
Integrated Development Environment
15
What should you consider when a procedure has parameters?
Answer
(B)
The argument should match the parameters.
16
What is the function of a 'FOR' loop in programming?
Answer
(A)
To execute a block of code repeatedly a specific number of times.
17
What is the primary purpose of nesting selection statements (e.g., an IF statement inside another IF statement)?
Answer
(C)
To enable the implementation of complex conditional logic.
18
Which of the following is an example of an input statement?
Answer
(C)
input("Enter a number:")
19
What is the main function of the `output` statement in the code examples?
Answer
(C)
To display results to the user.
20
What is the purpose of the `CLOSEFILE` statement in file handling?
Answer
(C)
To close the connection to the file.
21
What is a common use case for the 'try...catch' block?
Answer
(B)
To handle potential errors during file operations
22
Which of the following tasks is NOT typically performed by standard library routines (as discussed in the text)?
Answer
(C)
Defining the program's variables.
23
What is a fundamental concept in the context of creating a maintainable program?
Answer
(B)
Using meaningful identifier names.
24
Which type of statement enables a program to make decisions based on the evaluation of an expression?
Answer
(C)
Selection statement
25
In the provided Java code, what is the purpose of `try...catch` blocks?
Answer
(B)
To handle potential errors during file operations
26
What type of programming structure is characterized by loops that have at least one iteration?
Answer
(C)
Post-condition loops.
27
What operation is being performed by the code `NumberOfSacks = NumberOfSacks + 1;` (Counting)?
Answer
(C)
Incrementing the value of NumberOfSacks.
28
What type of loop always has at least one iteration?
Answer
(C)
Do-While loop
29
Which of the following is used to store a single character?
Answer
(C)
Char
30
What is the function of a file object?
Answer
(B)
To represent the file and provide methods for interacting with it.
31
Which logical operator would be used to combine the conditions 'A is true' and 'B is true' to only execute the consequent statements?
Answer
(B)
AND
32
What does the term 'bug' refer to in the context of programming?
Answer
(B)
An error or defect in a program.
33
What happens if there is a nesting of selection statements (IF-ELSE inside another IF-ELSE)?
Answer
(C)
It can create more complex decision-making logic.
34
When a function is defined, what will always be defined as the first statements to be defined?
Answer
(D)
The name of the function or procedure
35
What is the purpose of an algorithm?
Answer
(B)
To provide step-by-step instructions for solving a problem.
36
In the Totaling example (TotalWeight = TotalWeight + Weight), what does 'Weight' represent?
Answer
(B)
The amount to be added to the total weight.
37
Which statements are correct about nested statements?
Answer
A
C
38
Which string handling method is used to find the number of characters in a string?
Answer
(B)
Length
39
In the context of a program, what does 'iteration' refer to?
Answer
(B)
The process of repeating a set of instructions.
40
What is the purpose of the `OPENFILE` command in pseudocode for file handling?
Answer
(C)
To establish a connection with the file.
41
Which operator is used to get the remainder in division?
Answer
(C)
%
42
What is the primary function of selection statements in programming?
Answer
(C)
To make decisions and control program flow based on conditions.
43
What data type would be most appropriate for storing a student's grade (e.g., A, B, C)?
Answer
(C)
STRING
44
What operation does the following line of pseudo-code perform? `studentAverage = studentTotal / numOfSubjects`
Answer
(B)
Calculates the average mark of a student.
45
What does the inner loop of the program, as described in the 'Worked Example,' primarily calculate?
Answer
(C)
The total marks for each student.
46
In the code examples, which language uses `dim` and `console.writeline`?
Answer
(B)
Visual Basic
47
In Java, what is used to create an object for writing into a file?
Answer
(C)
FileWriter
48
What kind of loop is used for iteration in the examples given?
Answer
(A)
FOR...NEXT loop
49
What will be the output when `age` is 20, given the following code?
```
IF age >= 17
THEN
Print "You are an adult"
ELSE
Print "You are a child"
ENDIF
```
Answer
(B)
You are an adult
50
Which loop structure is known for checking the condition at the *end* of the loop?
