Input and Output

Programs interact with the user through input (receiving data) and output (displaying data). This lesson covers how to read data from a user, display results, and format output — all essential skills for GCSE Computer Science (AQA 3.2 / OCR J277 2.2).

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Output

Output is how a program communicates results to the user, typically by displaying text on the screen.

Pseudocode

OUTPUT "Hello, World!"
OUTPUT "Your score is: ", score

Python

print("Hello, World!")
print("Your score is:", score)

You can output multiple items by separating them with commas. Python adds a space between items automatically.

Concatenation in Output

You can join (concatenate) strings to build a message:

name = "Alice"
print("Welcome, " + name + "!")
# Output: Welcome, Alice!

When concatenating, all parts must be strings. Use str() to convert numbers:

score = 85
print("Your score is " + str(score))

Alternatively, use f-strings (formatted string literals) in Python 3.6+:

print(f"Your score is {score}")

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Input

Input is how a program receives data from the user, typically via the keyboard.

Pseudocode