Dev - C++ - Conversión de Grados (C , R, K, F)

using namespace std;

int main()

{

    const float PI = 3.14159265359;

    float c;

    cout << "\nC: "; cin >> c;

    cout << "\nR: " << c * PI / 180;

    cout << "\nK: " << c + 273.15;

    cout << "\nF: " << c * 9 / 5 + 32;

    cout << endl;

    return 0;

}