Macro expansion across multiple files

Projects Programming
8

like this:

#include "test.h"

uint8_t pinSet[] {
  1,2,3,4,5,6,7,8,9,0,11
};

const char *contestExchanges[] = {    // Exchange Message for Contest or common info:
  "                           ",      // Spaces to create 1-based array and used for erasing messages
  "CQ CQ CQ DE W8TEE",                // General CQ. Change as needed
  "599 OH",                           // DX CW contest exchange
  "1D OH",                            // Field Day See: http://www.arrl.org/files/file/Field-Day/2016/2016%20Rules.pdf
  " A W8TEE 54 OH",                   // SSCW This message is preceeded by an incrementing QSO number:http://www.arrl.org/sweepstakes
  "SKN",                              // Straight Key Night. Send this before RST report"
  "CINCINNATI,OH",                    // QTH
  "NAME JACK JACK",
  "RIG HB 5W QRP",
  "ANT DIPOLE 25 FT",                 // NOTE: Last entry has no comma at the end. The compiler automatically allocates emough memory
  "Woodland Mounds St Pk"
};

size_t arraySize = NUM_ELEMENTS(sizeof(pinSet), sizeof(pinSet[0]));
size_t heliBob = NUM_ELEMENTS(sizeof(contestExchanges), sizeof(contestExchanges[0]));

void setup() {
  Serial.begin(112500);
  Serial.println(arraySize);
  Serial.println(heliBob); // prints 11?
}

void loop() {

}

cpp:

#include "Arduino.h"
#include "test.h"

const char *wxyz[] = {    // Exchange Message for Contest or common info:
  "                           ",      // Spaces to create 1-based array and used for erasing messages
  "CQ CQ CQ DE W8TEE",                // General CQ. Change as needed
  "599 OH",                           // DX CW contest exchange
  "1D OH",                            // Field Day See: http://www.arrl.org/files/file/Field-Day/2016/2016%20Rules.pdf
  " A W8TEE 54 OH",                   // SSCW This message is preceeded by an incrementing QSO number:http://www.arrl.org/sweepstakes
  "SKN",                              // Straight Key Night. Send this before RST report"
  "CINCINNATI,OH",                    // QTH
  "NAME JACK JACK",
  "RIG HB 5W QRP",
  "ANT DIPOLE 25 FT",                 // NOTE: Last entry has no comma at the end. The compiler automatically allocates emough memory
  "Woodland Mounds St Pk"
};
size_t something = NUM_ELEMENTS(sizeof(wxyz), sizeof(wxyz[0]));

void someFunction(int, int) {
  static size_t myVar = NUM_ELEMENTS(sizeof(wxyz), sizeof(wxyz[0])) - 1;
}

header:

#ifndef TEST_H
#define TEST_H

constexpr size_t NUM_ELEMENTS(size_t i, size_t k) {
  return i/k;
}


#endif

is that what you mean? the array is also defined in the cpp file?