Temperature Unit Conversion

#include <iostream>
using namespace std;
 
float readTemp(int raw){
    return (float)raw*0.1;
}

float readTemp(int raw, char unit){
    if(unit == 'C'){
        return (float)raw*0.1;
    }else if(unit == 'F'){
        return (float)raw*0.1*1.8+32;
    }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;
}