10. Temperature Unit Conversion

 A temperature sensor outputs a raw reading in 0.1°C units.
 Create two overloaded functions named readTemp:

• float readTemp(int raw)
  • Converts the raw value to Celsius (default output)
• float readTemp(int raw, char unit)
  • If unit == 'C', return Celsius

  • If unit == 'F', Convert Celsius to Fahrenheit using:

    F = C * 1.8 + 32

In main():

• Read integer raw and character unit ('D', 'C', 'F')
• If unit == 'D', call readTemp(raw)
• Otherwise call readTemp(raw, unit)
• Print the temperature value as float (no formatting required) 

Example 1 

Input:

250 D

Output:

25

Example 2

Input:

250 F

Output:

77

Constraints:
 Use function overloading, not condition checks inside a single function.