1 \textbf{Accessing parts of arrays}

     2 

     3 \lstinline|C[i-1, j-1]| to access element i, j in C (mxn).

     4 \lstinline|C[i-1]| to access i^{th} row

     5 \lstinline|C[:, j-1]| to access j^{th} column

     6 

     7 Assigning to accessed elements, changes them. 

     8 

     9 \lstinline|A[m:n:o]| accesses the rows from \lstinline|m|

    10 to \lstinline|n| (excluded) in steps of \lstinline|o|

    11 

    12 Similarly, \lstinline|C[m:n:o, p:q:r]|