M[0]
1 2 3
4 5 6
M[1]
1 2
3 4
5 6
M[2]
2 1 0
0 3 101
4 -1 2

1. Addition
2. Subtraction
3. Multiplication
4. Transpose
5. Reverse
6. Scalar Multiplication
7. Find Determinant
8. Find the Maximum Value
9. Exit

Addition: M[1] + M[0]
The two matrices have mismatched size. Operation abandonned. 

Addition: M[0] + M[0]
1 2 3   1 2 2   2 4 6
4 5 6 + 4 5 6 = 8 10 12

Addition: M[2] + M[2]
2 1 0     2 1 0     4 2 0
0 3 101 + 0 3 101 = 0 6 202
4 -1 2    4 -1 2    8 -2 4

Good-bye!