C++ - Wet van Ohm berekenen

#include <iostream>
using namespace std;

int main()
{
    int keuze;
    float i, u, r;
    cout << "Wat wil je berekenen mbv de wet van Ohm?" << endl;
    cout << "1: Spanning U" << endl;
    cout << "2: Stroomsterkte I" << endl;
    cout << "3: Weerstand R" << endl;
    cin >> keuze;
    
    switch(keuze)
    {
        case 1:
             cout << "Geef I in (in A)" << endl;
             cin >> i;
             cout << "Geef R in (in Ohm)" << endl;
             cin >> r;
             u = r * i;
             cout << "U = " << u << "V" << endl;
             break;
        case 2:
             cout << "Geef U in (in V)" << endl;
             cin >> u;
             cout << "Geef R in (in Ohm)" << endl;
             cin >> r;
             i = u / r;
             cout << "I = " << i << "A" << endl;
             break;
        case 3:
             cout << "Geef U in (in V)" << endl;
             cin >> u;
             cout << "Geef I in (in A)" << endl;
             cin >> i;
             r = u / i;
             cout << "R = " << r << " Ohm" << endl;
             break;
        default:
             cout << "En wa verwacht ge nu da dees programmake doe? Koekskes bakke?" << endl;
    }
    cin.get();
    cin.get();
    
    return 0;
}

#include <iostream>
using namespace std;
 
int main()
{
    int keuze;
    float i, u, r;
    cout << "Wat wil je berekenen mbv de wet van Ohm?" << endl;
    cout << "1: Spanning U" << endl;
    cout << "2: Stroomsterkte I" << endl;
    cout << "3: Weerstand R" << endl;
    cin >> keuze;
 
    switch(keuze)
    {
        case 1:
             cout << "Geef I in (in A)" << endl;
             cin >> i;
             cout << "Geef R in (in Ohm)" << endl;
             cin >> r;
             u = r * i;
             cout << "U = " << u << "V" << endl;
             break;
        case 2:
             cout << "Geef U in (in V)" << endl;
             cin >> u;
             cout << "Geef R in (in Ohm)" << endl;
             cin >> r;
             i = u / r;
             cout << "I = " << i << "A" << endl;
             break;
        case 3:
             cout << "Geef U in (in V)" << endl;
             cin >> u;
             cout << "Geef I in (in A)" << endl;
             cin >> i;
             r = u / i;
             cout << "R = " << r << " Ohm" << endl;
             break;
        default:
             cout << "En wa verwacht ge nu da dees programmake doe? Koekskes bakke?" << endl;
    }
    cin.get();
    cin.get();
 
    return 0;
}