Temperature Unit Conversion

Question

Problem: Temperature Unit Conversion. Solve this hands-on electronics task on EWskills.

Accepted Answer

#include 
using namespace std;
 
// Default: convert raw reading to Celsius
float readTemp(int raw) {
    return raw / 10.0f;
}
 
// Overloaded: convert to Celsius or Fahrenheit
float readTemp(int raw, char unit) {
    float celsius = raw / 10.0f;
    if (unit == 'F') {
        return celsius * 1.8f + 32.0f;
    }
    return celsius; // 'C'
}
 
int main() {
    int raw;
    char unit;
    cin >> raw >> unit;
 
    if (unit == 'D') {
        cout << readTemp(raw);
    } else {
        cout << readTemp(raw, unit);
    }
 
    return 0;
}

Explanation & Logic Summary:

Overloading creates multiple readTemp interfaces:
- Default conversion to °C
- Unit-selectable conversion
The compiler chooses the correct overload based on the number of parameters.
Celsius is derived from raw sensor value by division.
Fahrenheit uses the standard conversion formula.

Firmware Relevance & Real-World Context:

Sensors often provide readings in different units depending on firmware needs (local processing vs UI/cloud).
Overloading keeps APIs clean:
- readTemp() for typical control-loop usage
- readTemp(raw, unit) for UI/export formatting
This mirrors real sensor driver design in embedded systems and HAL layers.

11. Temperature Unit Conversion