Array storing numbers in a list one by one

[erenkirstein]

How do I store numbers in an array like a list one by one?
example if i do:

int d[3];

void loop
{
  if(blabla){
    d[3]= {1}
  }
}

and then when it loops, I want the output to be d[3]={1,1,1}
How do I do that? The code above seems wrong

[UKHeliBob]

    d[3]= {1}

This will work but the braces are not needed

An example :

byte anArray[16];
const byte NUMBER_OF_ELEMENTS = sizeof(anArray) / sizeof(anArray[0]);

void setup()
{
  Serial.begin(115200);
  while (!Serial);
  for (int index = 0; index < NUMBER_OF_ELEMENTS; index++)
  {
    anArray[index] = random(256);
  }
  for (int index = 0; index < NUMBER_OF_ELEMENTS; index++)
  {
    Serial.print(index);
    Serial.print("\t");
    Serial.println(anArray[index]);
  }
}

void loop()
{
}

[septillion]

UKHeliBob:

    d[3]= {1}

This will work but the braces are not needed and will f*u the memory because d[3] isn't declared.
[/quote]
Because you only declared d[0], d[1] and d[2]

[UKHeliBob]

septillion:
Because you only declared d[0], d[1] and d[2]

My fault for not explaining that whilst it will work in general it is incorrect in the case of the OP's code