error: variable-sized object 'my2dArray' may not be initialized

Projects Programming
1

Hi there,

I' m trying to change 1 to 0 in two-dimensional (5x5 matrix) for specific servo positions.First, i tried to program forward movement of my robot. My code is like this:

#include <Servo.h>
#define x 5
#define y 5

Servo myServo;
Servo myServo2; 

int pos = 0;

int counter1;
int counter2;
int integer;

void setup() {
  Serial.begin(9600);
  myServo.attach(9);
  myServo2.attach(10);

}

void loop() {
  
 
  int my2dArray[x][y]= {
  {1,1,1,1,1},
  {1,1,1,1,1},
  {1,1,0,1,1},
  {1,1,1,1,1},
  {1,1,1,1,1},
  };
  
  int robot = my2dArray[2][2];
   
   if (counter1 > 0){
    for (integer = 0;  integer <2; integer +=1){
      int my2dArray[2 + integer][2] = robot * my2dArray[2 + integer][2];
      
     } 
 }
}
  
  
  int moveForward(){
  for (pos = 0; pos <= 360; pos += 1) { 
    myServo.write(pos);
    myServo2.write(pos);   
    delay(15);
    if (pos == 360){ 
    counter1 += 1;
    }
    return counter1;  
}
}

int moveBackward(){
  for (pos = 360; pos <=0; pos -= 1) { 
    myServo.write(pos);
    myServo2.write(pos);   
    delay(15);
    if (pos == 360){ 
    counter2 += 1;
    }
    return counter2;  
}
}

But i can' t change the [3][2] and [4][2] elements from 1 to 0. I get an error:

error: variable-sized object 'my2dArray' may not be initialized

Can you help me?
Thanks.

2

You only need the int in front of my2darray when you declare/define/initialize it. Change this line:

int my2dArray[2 + integer][2] = robot * my2dArray[2 + integer][2];

to

my2dArray[2 + integer][2] = robot * my2dArray[2 + integer][2];

You actually created a new array.

3

And it' s solved. Thank you very much.