Simple State Machine for Robot Controlling

simple_state_machine.cpp

#include <iostream>

char user_input;
char state;

void getInput(){
  std::cout << "please insert input : ";
  std::cin >> user_input;
  // Interpret Input as an states
  state = user_input;
}

void action(){

  switch (state) {
    case "w":
      //forward command
      std::cout << "[State]Forwarding" <<std::endl;
    break;

    case "s":
      //stop command
      std::cout << "[State]Stopping" << std::endl;
    break;

    case "x":
      //backward command
      std::cout << "[State]Backward" << std::endl;
    break;

    case "a":
      //turn left command
      std::cout << "[State]Turning Left" <<std::endl;
    break;

    case "d":
      //turn right command
      std::cout << "[State]Turning Right" <<std::endl;
    break;

    default:
      //default routine
      std::cout << "[State]Default Routine = Stopping" <<std::endl;
    break;
  }
}

void nextState(){

}

int main(int argc, char const *argv[]) {

  // Assign initial state

  // Begin Machine
  while(true){
    getInput(); // Move to the latched thread callback input
    action();
    nextState();
  }
  return 0;
}