ICT Grade 8 REVISION

Explain the relationship between an algorithm and a flowchart. How does a flowchart represent an algorithm?

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Answer explanation

An algorithm is a step-by-step procedure or set of instructions for solving a problem or accomplishing a specific task.

On the other hand, a flowchart is a graphical representation of an algorithm.

What is Python?

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Answer explanation

Python is a high-level, interpreted, and general-purpose programming language known for its simplicity and readability.

What are the key features of Python?

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Answer explanation

Some key features of Python include its easy-to-read syntax, dynamic typing, automatic memory management, extensive standard library, and support for multiple programming paradigms such as procedural, object-oriented, and functional programming.

What are the different data types available in Python?

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Answer explanation

   Python supports various built-in data types, including: Numeric types: int, float

Sequence types: list Text type: str Boolean type: bool

Explain the syntax of the if statement in Python and provide an example code snippet that demonstrates its usage.

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Answer explanation

The if statement in Python is used to perform conditional execution of code based on a given condition. Its syntax consists of the keyword "if" followed by a condition, followed by a colon (:). The code block that follows the if statement is indented and executed only if the condition is evaluated as True.

Example code snippet:

 

# Example code using if statement x = 10

if x > 5:

print("The value of x is greater than 5.")

How do you use the input() function in Python to receive user input? Provide an example code snippet that demonstrates its usage.

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Answer explanation

The input() function in Python is used to receive user input. It asks the user for input and waits for them to enter a value.

Here's an example code snippet:

name = input("Enter your name: ") print("Hello, " + name)

Explain the purpose of the print() function in Python. Provide an example code snippet that demonstrates how to print multiple values using this function.

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Answer explanation

The print() function in Python is used to display or output.

Here's an example code snippet that demonstrates printing multiple values: name = "John"

age = 25

print("Name:", name, "Age:", age) Output

Name: John Age: 25

How do you convert a string to an integer in Python? Describe the usage of the int() function and provide an example code snippet.

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Answer explanation

To convert a string to an integer in Python. Here's an example code snippet:

num_str = "10" num_int = int(num_str) print(num_int)

What is the purpose of the type() function in Python? How does it help in determining the data type of a value or variable? Provide an example code snippet that illustrates its usage.

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Answer explanation

The type() function in Python is used to determine the data type of a value or variable.

Here's an example code snippet: x = 5

print(type(x))

what does this python code do?

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Answer explanation

Enter two numbers and calculates their sum, product, and difference.