CMSC 202 Computer Science II, Fall 2015, Section 06

Lecture 20: Exceptions

Tue 11/10, 2015

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Assigned Reading:  18.1

Slides As Shown:

• Announcements, etc: [slide view] [print view]

• Exceptions : [slide view] [print view]

Topics Covered:

• We used a two-dimensional array example to test exceptions. When the array indices are out of bounds, we want to throw an exception instead of exiting the program.

  • In this example, the OutOfBounds class is an empty class but can be used to throw exceptions of that type: oob10.h, twodim10.h, twodim10.cpp and tdtest10.cpp.

  • The next version of OutOfBounds lets you store a string in the throw operand: oob11.h, oob11.cpp, twodim11.h, twodim11.cpp and tdtest11.cpp.

  • A more complicated version of OutOfBounds lets you report the value of the offending index: oob12.h, oob12.cpp, twodim12.h, twodim12.cpp and tdtest12.cpp.

  • Trying out exceptions mixed in with std::exception derived classes: vtest2.cpp