trouble incrementing index

Projects Programming
1

I'm trying to read a pair of comma separated values, store the values into arrays, read the next pair of values, and append them to the arrays.

Right now I can store the first pair of values into the array. But when I try to increment the array index and use it for the next set, it does not increment and instead overwrites the first set.

My code right now looks like this:

void setup() {
  // initialize serial:
  Serial.begin(9600);

  Serial.println("Ready");

}

void loop() {
  int index = 0;
  int t[50];
  int n[50];
  // if there's any serial available, read it:
  while (Serial.available() > 0) {
  


    // look for the next valid integer in the incoming serial stream:
    int c1 = Serial.parseInt();
    // do it again:
    int c2 = Serial.parseInt();

    // look for newline
    if (Serial.read() == '\n') {
      
      Serial.println(c1, DEC);
      Serial.println(c2, DEC);

      t[index] = c1;
      n[index] = c2;
      ++index;
    }
    
    //print what's currently in the arrays
    Serial.println("Sequence");
    int i;
    for (i = 0; i < 10; i = i + 1) {
    Serial.println(t[i]);
    Serial.println(n[i]);
      
    }
  }
}
2 
void loop() {
  int index = 0;

You are resetting it to zero each time through loop. Try moving it outside loop, eg.

int index = 0;

void loop() {
3

Thanks!

4

loop() is already a loop, you don't need another loop "while (Serial.available() > 0)", just use something like this:

if ( Serial.available () > 0 ) 
{
  static char input[16];
  static uint8_t i;
  char c = Serial.read();

  if ( c != '\r' && i < 15 ) // assuming "Carriage Return" is chosen in the Serial monitor as the line ending character
    input[i++] = c;
    
  else
  {
    input[i] = '\0';
    i = 0;
    
    //do whatever with input string...
    Serial.println( input );
  }
}