Split string at comma

Projects Programming
1

Hi!
I'm trying to split a string at a comma this is my string: Sunday, July 10 2022 10:17:27
and this is what I'm trying to get: July 10 2022 10:17:27
I've tried to use strtok(), but the output is: Sunday

2

So you probably only used strtok() once in your code. the example on https://cplusplus.com/reference/cstring/strtok/ shows how it can be used to split the full string. Note the use of the while-loop.

If you still have problems after that, post your code.

Note:
The example is not tailored to Arduino.

3

Like this:

char array[] = "Sunday, July 10 2022 10:17:27";
char *strings[3]; // an array of pointers to the pieces of the above array after strtok()
char *ptr = NULL;

void setup()
{
   Serial.begin(9600);
   //Serial.print(array);
   byte index = 0;
   ptr = strtok(array, " ,");  // delimiters space and comma
   while (ptr != NULL)
   {
      strings[index] = ptr;
      index++;
      ptr = strtok(NULL, ",");
   }
   //Serial.println(index);
   // print all the parts
   Serial.println("The Pieces separated by strtok()");
   for (int n = 0; n < index; n++)
   {
      Serial.print("piece ");
      Serial.print(n);
      Serial.print(" = ");
      Serial.println(strings[n]);
   }   
}

void loop()
{
   // step away, nothing to see here.
}

Output:

The Pieces separated by strtok()
piece 0 = Sunday
piece 1 = July 10 2022 10:17:27

4

subsequent calls to strtok () are passed a NULL pointer. strtok() captures a ptr to the string passed to it processes it during these subsequent calls

5

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