Instance class with pointer

Hello everybody, thank you to take the time to read this.
I try to read different AC voltage (5 different inputs) and control some relays.
to do so, I'm using 5 ZMPT101.
I've modified the library and everything is working fine if I names all class with specific names.
But, if I try to instance this class with a pointer to be able to scan the voltage in a loop (as you can do with an array), I'm stuck at the declaration of the class and it doesn't compile.

my code:

//InOut.h
//the target is to control Input and output 
#ifndef PIN_IN || ndef PIN_OUT
#include <Arduino.h>
//#include "ZMPT101B.h"// lib AC voltage reader
//start
#define ADC_SCALE 1023.0
#define VREF 1.7
#define DEFAULT_FREQUENCY 50
//end
class InOut{
	private:
	byte pinin;
	byte pinout;
	bool state;
	float u;
	const int Mv0=20;
	//start
	float offset=0;
	int zero = 512;
	float sensitivity =0.0018;
	float lastvalue=0;
	uint8_t pin;
	//end
	public:
	float szp=0; //set zero point
	InOut(byte pinin, byte pinout);
	void init();
	int GetVolt();
	void ON();
	void OFF();
	bool Status();
	//start
	void defzmpt(uint8_t _pin);
	float calibrate();
	void chgPin(uint8_t _pin);
	void setZeroPoint(int _zero);
	void setSensitivity(float sens);
	float getVoltageDC();
	float getVoltageAC(uint16_t frequency = 50);
	//end

};
#endif

then InOut.cpp

#include "InOut.h"
InOut::InOut(byte pinin,byte pinout){
	this->pinin = pinin;
	this->pinout = pinout;
	state=LOW;
//	init();
}
void InOut::init(){
	pinMode(pinout,OUTPUT);
	pinMode(pinin,INPUT);
	OFF();
//	sensitivity = 0.00180;//added 27/11-0.019 origine a 0.001 trop sensible
}

void InOut::ON(){
	digitalWrite(pinout, LOW);
}
void InOut::OFF(){
	digitalWrite(pinout, HIGH);
}
bool InOut::Status(){
	state=digitalRead(pinout);
	return state;
}
int InOut::GetVolt(){
	u=getVoltageAC();
	u=u-10;//security offset
	if(u < Mv0) {
		u=0;
	}
	if(u<lastvalue-2 || u>lastvalue+2) lastvalue=u;
	return int(lastvalue);

}	
//start
void InOut::defzmpt(uint8_t _pinin) {
	pinin = _pinin;
}

float InOut::calibrate() {
	uint16_t acc = 0;
	for (int i = 0; i < 10; i++) {
		acc += analogRead(pin);
	}
	zero = acc / 10;
	return zero;
}

void InOut::setZeroPoint(int _zero) {
	zero = _zero;
}

void InOut::setSensitivity(float sens) {
	sensitivity = sens;
}

float InOut::getVoltageDC() {
	int16_t acc = 0;
	for (int i = 0; i < 10; i++) {
		acc += analogRead(pin) - zero;
	}
	float V = (float)acc / 10.0 / ADC_SCALE * VREF / sensitivity;
	return V;
}
void InOut::chgPin(uint8_t _pin) {
	pin = _pin;
	sensitivity = 0.019;
}

float InOut::getVoltageAC(uint16_t frequency) {

	uint32_t period = 1000000 / frequency;
	uint32_t t_start = micros();

	uint32_t Vsum = 0, measurements_count = 0;
	int32_t Vnow;

	while (micros() - t_start < period) {
		Vnow = analogRead(pinin) - zero;
		Vsum += Vnow*Vnow;
		measurements_count++;
	}
	float Vrms = sqrt(Vsum / measurements_count) / ADC_SCALE * VREF / sensitivity;
	return Vrms;
}
//end

and the .ino

//test des librairies inout
#include "InOut.h"
#define INP0 A0
#define INP1 A1
#define INP2 A2
#define INP3 A3
#define INP4 A4
#define INP5 A5
#define OUT0 30
#define OUT1 28
#define OUT2 26
#define OUT3 24
#define LINK 22
InOut Inout[6] ((INP0,OUT0),(INP1,OUT1),(INP2,OUT2),(NP3,OUT3),(INP4,0),(INP5,0));

/* this is working but not practicle
InOut InO1(INP0,OUT0);
InOut InO2(INP1,OUT1);
InOut InO3(INP2,OUT2);
InOut InO4(INP3,OUT3);
*/
int tempM = 10000;
int temp=0;
int n=0;
void setup(){
Serial.begin(9600);
float cal=0;
for(n=0;n=5,n++) {
	Inout[n].init();
	cal=Inout[n].calibrate();
	Serial.println(cal);
}
/*
InO1.init();
InO2.init();
InO3.init();
InO4.init();
cal=InO1.calibrate();
Serial.println(cal);
cal=InO2.calibrate();
Serial.println(cal);
cal=InO3.calibrate();
Serial.println(cal);
cal=InO4.calibrate();
Serial.println(cal);
*/
}
void loop(){
	int u;
	for(n=0; n==3){
		u=Inout[n].GetVolt();
		if(u!=prev[n]){
			Serial.println(String("A") + n + ": " + u);
			prev[n]=u;
		}
		if(u>=200 && status==false && Inout.Status()==HIGH ){
			Inout[n].ON();
			status=true;
		}
		else {
			if (Inout[n].Status()==LOW) Inout.OFF();
		}
		delay(500);
	}
	// reset status
	for(n=0; n==3;n++){
		if (Inout[n].Status()=LOW){
			status=true;
			break;
		}
		status=false;
	}
	//display bus
	for (n=4; n==5;n++){
		u=Inout[n].GetVolt;
		Serial.println(String("B") + n + ": " + u);
		delay(500);
	}
}

I spent few hours looking on Google but can't find a way out, if someone can send me to the right direction.
Thank you for your help.

This compiles at least:

InOut Inout[6]= {InOut(INP0,OUT0),InOut(INP1,OUT1),InOut(INP2,OUT2),InOut(INP3,OUT3),InOut(INP4,0),InOut(INP5,0)};

You have a number of other minor compilation errors to fix though.

Try with {}

InOut Inout[] = {{INP0, OUT0}, {INP1, OUT1}, {INP2, OUT2}, {INP3, OUT3}, {INP4, 0}, {INP5, 0}};

Where is it, can’t see any instancing with a pointer

@J-M-L Thank you so much, after (a lot) of modification and corrections, this is working as expected.
Many thank for your help.

you probably don't need to call directly InOut(INP0,OUT0) in the array initialization, just {INP0,OUT0} should do it but it's equivalent

@kill zone kid
Sorry, I'm probably using the wrong terminology. that's what I call instance a class with pointer:

for(n=0 ; n<4 ; n++){
	u=Inout[n].GetVolt();
}

but I'm maybe wrong...
the class is Inout[n]."my function"()
the pointer is n
but once again, I'm maybe wrong on the terminologie.
Sorry for that.

You have the instances directly into your array, that's why you do u=Inout[n].GetVolt(); and not u=Inout[n]->GetVolt();

PS: it's a common practice in Arduino world to use camelCase for variable names and keep the first letter in upper case for classes. So I would change the Inout array name into something else inOutArray for example.

Yes, however this should not be an excuse, by not calling things their names you are confusing people that browsing this forum, thus reducing your chances for getting the answer you are looking for. What you were looking for was how to put class instances into an array.

(and there is a pretty decent French speaking forum if English was the barrier :slight_smile: )