Challenge

1. build an app that handles unit conversions
2. users will select an input unit and an output unit
3. then enter a value, and see the output of the conversion.
4. Which units you choose are down to you, but you could choose one of these:
   • Temperature conversion: users choose Celsius, Fahrenheit, or Kelvin.
   • Length conversion: users choose meters, kilometers, feet, yards, or miles.
   • Time conversion: users choose seconds, minutes, hours, or days.
   • Volume conversion: users choose milliliters, liters, cups, pints, or gallons.
5. If you were going for length conversion you might have:
   • A segmented control for meters, kilometers, feet, yard, or miles, for the input unit.
   • A second segmented control for meters, kilometers, feet, yard, or miles, for the output unit.
   • A text field where users enter a number.
   • A text view showing the result of the conversion.

Tips

1. First, and most importantly: keep it simple!
2. Second, a better idea is to convert the user’s input to a single base unit, then convert from there to the target unit.
3. Third, as we have three user values here – their input number, their input unit, and their output unit.
   • You need to have three @State properties to store them all
   • one TextField
   • two pickers
   • one text view to show your output
4. You can break your form up into sections if you want, but it’s not required.