Expected unqualified-id before '(' token caused by #include <vector>

I was trying to write a very simple function to read ADC 20 times, remove min and max and find the average. I stored the readings in a std::vector arr, but this error keeps showing up

…/wiring/inc/spark_wiring_arduino_constants.h:111:18: expected unqualified-id before ‘(’ token

I realized even only include the “vector” library and not do anything else would still give the same error.

Here’s my code. I commented out the function that has vectors in it. But even this is giving me error.

#include "ADS1015_async.h"
#include "application.h"
#include "MCP4728.h"
#include "math.h"
#undef swap
#include "vector"
//using namespace std;
//std::vector<int> arr;

Once I comment out

#include “vector”

everything compiles.

Have you tried this?

#include <vector>

Yes I tried both.

The error is pointing to an include file from the system. ScruffR posted a bug report on this error here:

If this is the same error regarding the max macro, then try undefining that macro prior to including the header for vector.

Hi Thanks for the reply. But I didn’t use the max macro in the code. I didn’t define anything in my code actually.

You don’t have to have used it. The standard library contains a definition of max (and min) that would conflict with one in the constants header. Just including the vector header could cause a clash.

I’m not sure if this is definitely the problem, but based on ScruffR’s bug report you should look into it carefully. Try:

#undef max
#include <vector>

Note that there may be other conflicts to deal with such as min.

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ohhhh It did compile thank you so much!!

Has there been any progress on fixing this issue? I’m trying to switch a project using lists to vectors and the provided fix isn’t working for me.