Programming Fundamentals
Real life
If-statements are running your whole day
You will meet an if-statement before you even get home
Quick check · tap an answer to continue
Lesson notes
Key points
- Mobile money transfer: The app checks if your balance covers the amount, then sends or rejects it.
- Traffic light junction: A loop cycles the lights while conditions on sensors decide when to switch.
- Mine conveyor shutdown: Control software stops the belt if a sensor reading crosses a safety threshold.
Takeaway: Conditions and loops decide what real systems do next.
Quick check: What control structure rejects a transfer when your balance is too low?
- A for loop
- A function return
- A conditional branch
A condition is tested and one of two branches runs.
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