Problems Creating Library

Projects Programming
1

I am attempting to create a library that will hold a function for opening a file with a user-input name, and also a function for reading the contents of said file. I am new to creating library's and I am receiving an error in the constructor of my header file saying that it is looking for an unqualified-id before the second parenthesis. I have cross-checked my code with a team member's header and all seems to fit. Any ideas?

.cpp file:

#include "Arduino.h"
#include "interactSD.h"
#include <SPI.h>
#include <SD.h>

interactSD::interactSD()
{

}

void interactSD::getFilename()
{
  userInput = Serial.readString();
  userInput.trim();
  userInput.concat(".TXT");
  fileName[userInput.length() + 1];
  userInput.toCharArray(fileName, userInput.length() + 1);
}

void interactSD::readFile()
{
 userFile = SD.open(filename, FILE_READ);
  while (userFile.available()) {
    Serial.write(userFile.read());
  }
  userFile.close();
  Serial.println("done");
}

.h file:

#ifndef interactSD
#define interactSD
#include <SPI.h>
#include <SD.h>
#include "Arduino.h"

class interactSD
{
  public:
    interactSD();             //line with the error***
    void readFile();
    void getFilename();
    char fileName[];
    String userInput;
    File userfile;
}
;
#endif

Thanks for your help!

2

The #define statement creates a name/value pair. The preprocessor substitutes the value where the name appears. After the preprocessor runs, you have:

#include <SPI.h>
#include <SD.h>
#include "Arduino.h"

class 
{
  public:
    ();             //line with the error***
    void readFile();
    void getFilename();

I think you can see that there IS a problem.

Typically, an include guard has a _H appended to the class name.

3

Thanks, that solved the issue!