Program and source code
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. What is source code?
2. A program is a list of instructions. Which statement is correct?
3. Who normally writes source code?
4. Can the CPU run source code written in Python directly?
5. Which one is source code?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1print("Hello") | AMachine code that the CPU can run directly; it is what source code becomes after translation | |
| 210110000 01100001 | BA line of source code written by a programmer in a high-level language (Python); it is one instruction in a program | |
| 3A program is a list of instructions that the computer follows in order, one after another | CThe command is spelled wrongly, which breaks the language's rules. It should be print("Hello"), or the translator will report an error. | |
| 4A programming language has rules (syntax) that programmers must follow when they write source code | DThe CPU only runs machine code. Source code must first be translated by a compiler, an interpreter or an assembler. | |
| 5The CPU can run source code directly without any translation | Eif score >= 50: print("Pass") | |
| 6prnit("Hello") | Fname = input("Name? ") print("Hi " + name) |
C
Definitions
source code
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
# This is human-written ______ code
print("Hi")
2.
name = "Sam"
_____(name)
3.
x = 5
y = x + 2
print(_)
4.
# The CPU needs a __________ to run this
print("Hi")
5.
# Python's rules are its ______
print("Hi")
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
name = input("Name: ")
B
age = 15
C
total = age + 1
D
print(name, total
Question 2
A
x = 5
B
y = 10
C
prnt(x + y)
Question 3
A
total = 0
B
total = totl + 5
C
print(total)
Question 4
A
score = 10
B
bonus = 5
C
score = score + bonus
D
print score
Question 5
A
name = "Sam"
B
age = 15
C
Print(name, age)
Answer Key
Program and source code
Section A: Quick Questions
Q1
B — The instructions a programmer writes in a programming language
Q2
A — The computer follows the instructions in order, one after another
Q3
A — A programmer
Q4
A — No, it must be translated into machine code first
Q5
B — total = price * quantity
Section B: Match the Pairs
Q1
print("Hello") → A line of source code written by a programmer in a high-level language (Python); it is one instruction in a program
Q2
10110000 01100001 → Machine code that the CPU can run directly; it is what source code becomes after translation
Q3
A program is a list of instructions that the computer follows in order, one after another → name = input("Name? ")
print("Hi " + name)
Q4
A programming language has rules (syntax) that programmers must follow when they write source code → if score >= 50:
print("Pass")
Q5
The CPU can run source code directly without any translation → The CPU only runs machine code. Source code must first be translated by a compiler, an interpreter or an assembler.
Q6
prnit("Hello") → The command is spelled wrongly, which breaks the language's rules. It should be print("Hello"), or the translator will report an error.
Section C: Definitions
Q1
source code — The instructions a programmer writes in a programming language. The CPU cannot run it until a translator turns it into machine code.Section D: Fill in the Blanks
Q1
# This is human-written source code
print("Hi")Q2
name = "Sam"
print(name)Q3
x = 5
y = x + 2
print(y)Q4
# The CPU needs a translator to run this
print("Hi")Q5
# Python's rules are its syntax
print("Hi")Section E: Spot the Error
Q1
D — Every programming language has rules for how source code is written. This line is missing the closing bracket. It should be print(name, total).
Q2
C — The language only knows the instruction print. A misspelt keyword breaks the rules of the language, so the translator cannot understand the line. It should be print(x + y).
Q3
B — The variable name is misspelt, so the instruction refers to something that does not exist. It should be total = total + 5.
Q4
D — In Python, print is a function, so its input must be in brackets. Source code must follow the language's rules. It should be print(score).
Q5
C — Python is case-sensitive, so Print is not the same instruction as print. The translator does not recognise it. It should be print(name, age).