Compilation Error

Using Arduino Programming Questions
1

I am in a Mac with ElCapitan operating system.
I get the following error:
Keyboard_Instrument.ino:3:17: error: array must be initialized with a brace-enclosed initializer.

[code][code]
int buttons[6];
// set up an array with 6 integers
int button[0] = 2;
// give the first element of the array the value 2
int notes[] = {262,294,330,349};
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
}
void loop() {
  // put your main code here, to run repeatedly:
  int keyVal = analogRead(A0);
  Serial.println(keyVal);
  if(keyVal == 1023){
    tone(8, notes[0]);
  }
  else if(keyVal >= 990 && keyVal <= 1010){
    tone(8, notes[1]);
  }
  else if(keyVal >= 505 && keyVal <= 515){
    tone(8, notes[2]);
  }
  else if(keyVal >= 5 && keyVal <= 10){         (This is line Number 17)cbcademd
    tone(8, notes[3]);
  }
  else{
    noTone(8);
  }
}

/code]

2 
int button[0] = 2;

A zero element array?

3

I have changed int button[0] = 2; to int buttons[0] =2;. int buttons[0] =2; is the code as written in the Project Book
I get this error:
Keyboard_Instrument: ino:1:5: Error: "buttons has a previous declaration as 'int buttons[6]' Error compiling."
Please inform me what the correction should be.

4

Please inform me what the correction should be.

Don't declare two variables of the same name in the same scope.

Did you meanint buttons[6] = {2,0,0,0, 0,0};?

5

The first two "int" entries should never have been made in the code. They were simply tutorial explanations of arrays in the paragraph prior to the written code in the Project Manual. I removed those two entries and now get no Compilation Error. Thanks, AWOL, your comment made me study the problem a little deeper and come up with a solution. cbcademd