String or Char Arrays Length Definition

Using Arduino Programming Questions
24

Back to the original problem... I almost got it. I still have a couple of questions (below!);

Here's the code:

char Name[9] = ""; // My Data array
char inChar; // Where to store the character read
byte index = 0; // Index into array; where to store the character


void setup(){

Serial.begin(9600);

}

void loop(){
  if (Serial.available()>0){
     inChar = Serial.read(); 
     Name[index] = inChar; // Store it
     if (index>8){
         Serial.println("Invalid Input, please enter 3 to 8 characters");
         index=-1;
         memset(Name, 0, sizeof(Name));
     }
   else if (int(Name[index])==13){  //If Carriage return has been reached
            Serial.println(Name);    
         index=-1;
         Name[9] = '\0';
         memset(Name, 0, sizeof(Name));         
   }
   index++; // Increment where to write next
  }
}

If I insert any string from 1 to 8 chars it works perfectly, else:

  • 9 chars - println the error message - GREAT!

  • 9 chars - sometimes prints error message twice (more than 20 chars) or error message + modulos 10 (that is the 11th, 12th, 13th... chars) - I don't get why? or how to avoid?

Thanks for your help so far!!