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C++ I have built a circuit but I am not sure how to code it

I am new to coding and I am not sure how to do this. I built a circuit for a stepper motor to go in a full circle using an Arduino Uno. There is also an A4988 stepper motor driver and a potentiometer and a capacitor. The code is on the website wokwi and it is C++ code. I haven't coded it yet so if someone could please help i would really appreciate it. thanks
to control a stepper motor you will need to use the arduino ide to write and upload code to the arduino board
for example heres the code of how you can control the stepper motor

#include <stepper.h>
const int stepsPerRevolution=200; //Change this to match the number of revolutions for your motor
stepper mystepper(stepsPerRevolution, 8,10,9,11,);
int potpin=A0;
Int potvalue=0;
void setup(){
void loop(){
potValue= analogread(potpin);
potValue= map(potvalue 0,1023,0,stepsPerRevolution);
this code uses the stepper library that comes pre-installed with the arduino IDE. it sets up the stepper motor with the specified number of steps per revolution, and the pin connection for the motor.
in the setup() function, the code sets the speed of the stepper motor and the pin for the potentiometer as an input
please note that the code is used just as an example and it might not work you must check the wiring of the circuit and adjust accordingly.
also the capacitor should be connected in parallel with the stepper motor , this will help to smoothen the current to the motor