C++

So for some time now i have been learning C++ programming and its going pretty good! Though i dont realy have anything to show except for a calculator

#include <iostream> #include <cmath> long double root(long double value, long double root) { return std::pow(value, 1.0/root); } long double calc(std::string op, long double a, long double b) { long double result; // some guy helped me to make this code clean if (op == "+") { result = a+b; } else if (op == "-") { result = a-b; } else if (op == "*") { result = a*b; } else if (op == "/") { result = a/b; } else if (op == "root") { result = root(a,b); } else { std::cout << "nuh uh. wrong operator"; } return result; } int main(int argc, char *argv[]) { long double a; std::cin >> a; std::string op; getline(std::cin, op); long double b; std::cin >> b; std::cout << calc(op, a, b) << std::endl; return 0; }