const int dirPin = 8;
const int stepPin = 9;
int up = 10;

void setup()
{
    Serial.begin(9600);
    Serial.setTimeout(1000);
    pinMode(stepPin, OUTPUT);
    pinMode(dirPin, OUTPUT);
    Serial.println("Enter the steps you want to take: ");
}

void loop()
{
  if (Serial.available() > 0)
    {
        int up = Serial.parseInt();  // More reliable method to get integer from Serial
        if (up > 0)
        {
            Serial.print("Moving ");
            Serial.print(up);
            Serial.println(" steps.");
            stepper(up);
            Serial.println("Enter the steps you want to take: ");
        }
    }
}

void stepper(int up)
{
    digitalWrite(dirPin, LOW);
    for (int x = 0; x < up; x++)
    {
        digitalWrite(stepPin, HIGH);
        delayMicroseconds(10000);
        digitalWrite(stepPin, LOW);
        delayMicroseconds(10000);
    }
     delay(100);
    digitalWrite(dirPin, HIGH);
    for (int x = 0; x < up; x++)
    {
        digitalWrite(stepPin, HIGH);
        delayMicroseconds(10000);
        digitalWrite(stepPin, LOW);
        delayMicroseconds(10000);
    }
    
}