Temperature Unit Conversion

#include <iostream>
using namespace std;
 
// Write your code here
 float readTemp(int raw){
        raw=raw/10;
        return static_cast<float>raw;
 }

 float readTemp(int raw ,char unit){
        raw=raw/10;
        if(unit== 'C'){
            return static_cast<float>raw;
        }else if(unit=='F'){
            raw= raw *1.8 +32;
            return static_cast<float>raw;
        }
 }
int main() {
    int raw;
    char unit;
    cin >> raw >> unit;
 
    if (unit == 'D') {
        cout << readTemp(raw);
    } else {
        cout << readTemp(raw, unit);
    }
 
    return 0;
}