18. Functions: declare, define and call

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Lesson 18

Functions: declare, define and call

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What you will learn in this lesson

  • What a function is, and why every big program is made of many small ones.
  • Write your own function and call it from main.
  • Send values into a function with parameters.
  • Get an answer back with return.
  • Write a prototype, so a function can live below main.

60 minutes Lesson 18 of 37

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