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CSC209 Tutorial Three

Arrays and pointers continued, dynamic memory, command line arguments, valgrind

Slides created by Daniel Laufer and Meghan Torchia

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Valgrind

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  • Valgrind is a set of tools for debugging and profiling code.
  • It can be used to find errors, to detect vulnerabilities, and to optimize performance.
    • For example: finding memory leaks in your program.

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Valgrind Example

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Output from running valgrind --leak-check=yes -v ./a.out

“a.out” is just the name of the executable in this example

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Additional Questions

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CSC209 2017 Final Exam Question 2a

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CSC209 2017 Final Exam Question 2d

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CSC209 2017 Final Exam Question 2e

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CSC209 2017 Final Exam Question 2f

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Let’s work on some questions

Lab code can be found in the ‘lab code’ link under week 3’s content on the course website.

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Anonymous Feedback/suggestion

Form

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https://docs.google.com/forms/d/1lEaKG1STcDGnJ6_2-xtSEyW4v0-sSCKhylyi4QgZdaE/edit

  • Is there anything specific you’d like us to cover in next week’s tutorial?
  • Is there anything you’d like to change about these tutorials?
  • Let us know!

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Thanks for coming!