Temperature Unit Conversion

#include <iostream>
using namespace std;
 
float readTemp(int raw)
{
    return (float)raw/10.0;

}

float readTemp(int raw, char unit)
{
    if(unit == 'C')
    {
        return (float)raw/10.0;
    }
    else if (unit == 'F')
    {
        return (float)(raw/10.0 )*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