CMSC 202 Computer Science II, Fall 2015, Section 06

Lecture 14: 2D Arrays

Thu 10/15, 2015

Up]

Assigned Reading: 

Slides As Shown:

• 2D arrays: [slide view] [print view]

• Genericity: [slide view] [print view]

Topics Covered:

• Discussion of a perhaps more straightforward implementation of a two dimensional array. (See slides.)

  In the first implementation, we used a member function at() to access items in the 2D array. The [] operator also works, but doesn't check bounds: twodim.h, twodim.cpp, tdtest.cpp.

  In the second implementation, we made the [] operator check bounds, but we had to define a small class SmartIntPtr just to check the column number is in bounds: twodim2.h, twodim2.cpp, tdtest2.cpp.