Temperature Unit Conversion

#include <iostream>
using namespace std;

float readTemp(int raw)
{
    return raw*0.1;
}
float readTemp(int raw, char unit)
{
    if(unit == 'C')
        return raw*0.1;
    if(unit == 'F')
        return (raw*0.1)*1.8 + 32;
}
// Write your code here
 
int main() {
    int raw;
    char unit;
    cin >> raw >> unit;
 
    if (unit == 'D') {
        cout << readTemp(raw);
    } else {
        cout << readTemp(raw, unit);
    }
 
    return 0;
}

Solving Approach