在类方法中赋值给二维数组

I'm can't seem to find a solution to assigning int values to a 2-d array inside a class method. Points and Dimension are set through the other functions. I could and probably should use vector here but I was wondering how I would do it the stupid way? Also for future reference I searched "C++ 2-d array inside class assign variable" but I didn't get an answer to this answer, what terminology was I missing?I'm can't seem to find a solution to assigning