Temperature Unit Conversion

#include <iostream>
using namespace std;
 
// Write your code here
 float readTemp(int raw){
    raw= 0.1*raw;
    return raw ;
 }
 float readTemp(int raw, char unit){
    if(unit=='C'){
        raw=0.1*raw;
        return raw;
    }else if(unit=='F'){
        raw=raw*0.1;
        raw=raw*1.8+32;
        return raw;
    }else{
        return 0;
    }

    }
 
int main() {
    int raw;
    char unit;
    cin >> raw >> unit;
 
    if (unit == 'D') {
        cout << readTemp(raw);
    } else {
        cout << readTemp(raw, unit);
    }
 
    return 0;
}

Solving Approach