How to define a two-dimensional array

Question

The following is how I want to define a two-dimensional array without initializing its length:

Matrix = [] []

But this produces a mistake:

List index out of range: IndexError

Answer 1

The array's size must be specified as follows:

int majorPositions[][3]={{0,90,-90},{90,15,90},{-45,-30,30},{0,60,0}};

or

int majorPositions[4][3]={{0,90,-90},{90,15,90},{-45,-30,30},{0,60,0}};

Can't you just express the last column, which is merely ON/OFF, as a 1 or 0?