#include <iostream>
#include <cstdlib>
#include <cmath>
using namespace std;

int usage() {
    // Prints usage message (help)
    // system("figlet XSC | lolcat");
    cout << "\neXtremelySimpleCalculator usage:\n"
    << "`xsc --help` for help\n"
    << "`xsc <number> <(+|-|*|/|%|^)> <number>` for basic operation calculating\n"
    << "`xsc -r|--sqrt <number>` for square root calculation\n";
    return 0;
}

int doOperation(int n1, char opx[], int n2) {
    // Performs calculations, TODO: improve :)
    int result;
    switch (opx[1]) {
       case '+':
          result = n1 + n2;
          break;
       case '-':
          result = n1 - n2;
          break;
       case '*':
          result = n1 * n2;
          break;
       case '/':
          result = n1 / n2;
          break;
       case '%':
          result = n1 % n2;
          break;
       case '^':
          result = pow(n1, n2);
          break;
       default:
          cout << "invalid operator!\n";
          break;
    }
    return result;
}

int main(int argc, char* argv[]) {
    // main::Calculations();
    if (argv[1] == "-r" || argv[1] == "--sqrt") {
        int result = sqrt(atoi(argv[2]));
    }
    else {
        int result = doOperation(atoi(argv[1]), argv[2], atoi(argv[3]));
    }

    // main::Handling();
    if (argv[1] == "--help" || argv[1] == "-h") {
        usage();
        return 0;
    }
    else if (argc > 4) {
        cout << "too many arguments!\n";
        usage();
        return 1;
    }
    else if (argc < 2) {
        cout << "not enough arguments!\n";
        usage();
        return 1;
    }
}