Data Types

In this section, you will learn about the primitive data types built-in to C, the special data types afforded them by the CS50 Library, the qualifiers that can be applied to data types, and the difference between static and dynamic typing.

• Lecture (Part 0)

  • Watch on Youtube
  • Watch on the CS50 Video Player
  • Download Lecture
  • Lecture Notes

• Lecture (Part 1)

  • Watch on Youtube
  • Watch on the CS50 Video Player
  • Download Lecture
  • Lecture Notes

• Short

  • Data Types

• Notes

  • Data Types

• Supplementary Resources

  • David Malan on Modern Marvels

• Thought Questions

  • Why is C so inflexible with data types? (Hint: Consider its history relative to modern language)
  • Imagine we don’t have data types. What’s 10 + "10"? Is it "1010" or "20" (strings) or 1010 or 20 (ints)?
  • In what situations would it be preferable to use a double versus a float, or a long long versus an int? (Or vice versa)