char inputBuffer[50];  // Buffer to store incoming data
int buffIndex = 0;  // Index to keep track of where to store the next character

void setup() {
  Serial.begin(9600);
  Serial.println("char array tutorial");
  Serial.println();
  Serial.println("Type a string and terminate with RETURN");
  Serial.println();
}

void loop() {
  while (Serial.available() > 0) {
    char incomingByte = Serial.read();
    if (incomingByte == '\n') {
      inputBuffer[buffIndex] = '\0';  // Null-terminate the string
      Serial.print("You entered: ");
      Serial.println(inputBuffer);
      buffIndex = 0;  // Reset index for the next input
    } else {
      inputBuffer[buffIndex++] = incomingByte;
      if (buffIndex >= sizeof(inputBuffer) - 1) {
        buffIndex = sizeof(inputBuffer) - 1;
      }
    }
  }
}