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home/code-exercises/temperature_conversion.md

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+---
+title: Temperature Converter
+description: 
+published: true
+date: 2025-06-28T01:36:15.092Z
+tags: 
+editor: markdown
+dateCreated: 2025-06-28T01:36:15.092Z
+---
+
+# Python Programming Exercise: Temperature Converter
+
+## Objective
+Create a Python program that converts temperatures between Celsius, Fahrenheit, and Kelvin using functions. This exercise will help you practice defining and using functions, handling user input, and performing calculations.
+
+## Instructions
+Write a Python program that:
+1. Defines three functions to handle temperature conversions:
+   - `celsius_to_fahrenheit(celsius)`: Converts Celsius to Fahrenheit
+   - `celsius_to_kelvin(celsius)`: Converts Celsius to Kelvin
+   - `convert_temperature(value, unit)`: Takes a temperature value and unit (C, F, or K) and returns conversions to the other two units
+2. Prompts the user to input a temperature value and its unit.
+3. Validates the input to ensure it's a valid number and unit (C, F, or K).
+4. Uses the `convert_temperature` function to perform the conversions and display the results.
+
+## Requirements
+- Use appropriate function parameters and return values.
+- Handle invalid inputs (non-numeric values or incorrect units) with error messages.
+- Round all output temperatures to 2 decimal places.
+- Include a main function to organize the program flow.
+
+## Conversion Formulas
+- Celsius to Fahrenheit: °F = (°C × 9/5) + 32
+- Celsius to Kelvin: K = °C + 273.15
+- Fahrenheit to Celsius: °C = (°F - 32) × 5/9
+- Kelvin to Celsius: °C = K - 273.15
+
+## Example Output
+```
+Enter a temperature value: 25
+Enter the unit (C, F, or K): C
+25.00°C equals:
+77.00°F
+298.15K
+```
+
+## Tips
+- Use `try`/`except` to handle invalid numeric inputs.
+- Check if the unit is one of 'C', 'F', or 'K' (case-insensitive).
+- Structure your program with a `main()` function that calls other functions.
+- Test your program with different inputs, including edge cases like negative temperatures or invalid units.
+
+## Challenge
+Add an optional feature to allow the user to continue converting temperatures until they choose to quit.