Referencing variables in a for loop

Projects Programming
1

I would like to reference some variables in a for loop:

int R1 = 0;
int R2 = 1;
int R3 = 2;
int R4 = 3;
int R5 = 4;
int R6 = 5;
int R7 = 6;
int R8 = 7;

void setup() {
}

void loop() {

  for (int i = 1; i < 9;) {
    int x = R(i);
    if (x > 0) {
      Serial.print(x);
      delay(200);
    } else {
      Serial.println("nothing");
    }
  } i++;
}

I want int x to refernce the global variables R1-8 whilst incrementing the for loop,
is it possible to do it in a for loop?

2

Google ‘Arduino array’.

byte r[] = {0,1,2,3,4,5,6,7};

i++; Why ?

for (int i = 1; i < 9; i++)

3

larryd:
i++; Why ?

Indeed.
And certainly not outside of the for loop!

4

larryd:
Google ‘Arduino array’.

i++; Why ?

Don't really know - i was looking to implement a break if the condition wasn't met.

5

this is what ive got so far:

void engineSettings() {
  int R[7];
  int R2[7];
  simc.println("AT+CMGR=1");
  delay(1000);
  if (simc.find("#")) {
    TTL = simc.parseInt();
    Serial.println(TTL);
    TTH = simc.parseInt();
    Serial.println(TTH);
    TTC = simc.parseInt();
    Serial.println(TTC);
    CDR = simc.parseInt();
    Serial.println(CDR);
    CYL = simc.parseInt();
    Serial.println(CYL);
    MCD = simc.parseInt();
    Serial.println(MCD);
    LBT = simc.parseInt();
    Serial.println(LBT);
    //EEPROM WRITE
  }
  if (simc.find("1AUTO")) {
    BH1 = simc.parseInt();
    BM1 = simc.parseInt();
    EH1 = simc.parseInt();
    EM1 = simc.parseInt();
    for (int i = 0; i < 7;) {
      R[i] = simc.parseInt();
      if (R[i] > 0 && R[i] < 8) {
        i++;
      } else {
        simc.print("AT+CALA=\"");simc.print(BH1);simc.print(":");simc.print(BM1);simc.print(":00\""",1"); simc.print(",");simc.println(R[0]);
        simReply();
        simc.print("AT+CALA=\"");simc.print(EH1);simc.print(":");simc.print(EM1);simc.print(":00\""",3"); simc.print(",");simc.println(R[0]);
        simReply();
        break;
      }
    }
    simc.print("AT+CALA=\"");simc.print(BH1);simc.print(":");simc.print(BM1);simc.print(":00\""",1");
    for (int i = 0; i < 7;) {
      if (R[i] > 0 && R[i] < 8) {
        simc.print(",");simc.print(R[i]);
      } else {
        break;
      }
      simc.println();
      simReply();

    }    simc.print("AT+CALA=\"");simc.print(EH1);simc.print(":");simc.print(EM1);simc.print(":00\""",3");
    for (int i = 0; i < 7;) {
      if (R[i] > 0 && R[i] < 8) {
        simc.print(",");simc.print(R[i]);
      } else {
        break;
      }
      simc.println();
      simReply();
    }

it has compiled but its chewing up the memory, is there any way to combine the serial.prints?

6 
int R[8] = {0, 1, 2, 3, 4, 5, 6, 7};

void setup() {
  Serial.begin(9600);
}

void loop() {

  for (int i = 0; i < 8; i++) {
    int x = R[i];
    if (x > 0) {
      Serial.println(x);
      delay(200);
    } else {
      Serial.println("nothing");
    }
  }
}