If-Then Logic
If-Then logic is like making a decision: when something happens, you take a specific action in response. 🤔
簡要介紹
If-Then logic is a way of making decisions based on conditions, just like how we make choices in everyday life. 🔄 It's the same as saying 'If it rains, then I'll take an umbrella' or 'If I'm hungry, then I'll eat.' This simple but powerful concept is used everywhere, from basic decision-making to complex computer programming.
主要說明
Basic Structure 📝
If-Then logic has two main parts: a condition (the 'if' part) and an action (the 'then' part). It's like having a light switch - if you flip it up, then the light turns on.
Decision Making 🤹
The condition must be either true or false, like a yes/no question. If the condition is true, the action happens. If it's false, the action doesn't happen. It's like a vending machine: if you put in enough money, then you get your snack.
Multiple Conditions 🎯
You can combine multiple if-then statements. It's like getting ready for weather: if it's cold, then wear a coat; if it's raining, then take an umbrella; if it's sunny, then wear sunscreen.
Cause and Effect ⚡
If-Then logic shows the relationship between causes and effects. It's like dominos - if you push the first one, then all the others will fall in sequence.
範例
- 🌧️ Weather App: If the temperature drops below freezing, then the app sends a frost warning notification.
- 🎮 Video Game: If the player collects 100 coins, then they earn an extra life.
- 🚦 Traffic Light: If the light turns red, then cars must stop; if it turns green, then cars can go.
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