// by aryx, 2017 // [email protected] | GAMF | http://potvizs.ga #include <iostream> using namespace std; double Korterulet(double r) { return pow(r, 2) * 3.14; // Math-ot nem töltök be, de a pow jó lesz. } double Korkerulet(double r) { return 2 * r * 3.14; } int main() { double sugar; cout << "R = "; cin >> sugar; cout << "T = " << Korterulet(sugar) << "\n"; cout << "K = " << Korkerulet(sugar) << "\n"; system("pause"); return 0; // no bugz, just code }