Temperature Unit Conversion

#include <iostream>
using namespace std;
 
// Write your code here
float readTemp(int raw){
    return raw / 10.0;
}

float readTemp(int raw, char unit){
    float celcius = raw/10.0;
    if(unit =='C')
        return celcius;
    else
        return celcius * 1.8 + 32;
}
 
int main() {
    int raw;
    char unit;
    cin >> raw >> unit;
 
    if (unit == 'D') {
        cout << readTemp(raw);
    } else {
        cout << readTemp(raw, unit);
    }
 
    return 0;
}

Solving Approach