Zeller, Andreas Universität Passau, Lehrstuhl Für Software-Systeme, Passau, Germany.
- Visualizing data structures
- Animating algorithms
- Summarizing executions
- Links to Primary Literature
- Additional Readings
Visualization of computer program state and program execution to facilitate understanding and, if necessary, alteration of the program. Debuggers are universal tools for understanding what is going on when a program is executed. Using a debugger, one can execute the program in a specific environment, stop the program under specific conditions, and examine or alter the content of the program variables or pointers. Traditional command-line oriented debuggers allowed only a simple textual representation of the program variables (program state). In the Unix GNU debugger (GDB), for instance, one would enter “print variable” to see a textual representation of variable on the console:
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