Computer Science A - 10/4/99 Apmatrix (2-dimentional vector) Apmatrix is a two demensional array of rows or columns. [0]|[1]|[2]|[3] [0]|___|___|___|___| numrows = 3 [1]|___|___|___|___| numcols = 4 [2]|___|___|___|___| 12 variables Need: Sample declarations: apmatrix board; apmatrix matrix(3, 4); apmatrix X(2, 2, true); apmatrix table(matrix); apmatrix table = matrix; Sample statements: matrix.resize(5, 7); for(int row = 0; row < matrix.numrows(); row++) { for(int col = 0; col < matrix.numcols(); col++) cout<