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You're reading from  Learn C Programming. - Second Edition

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Published inAug 2022
PublisherPackt
ISBN-139781801078450
Edition2nd Edition
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Jeff Szuhay
Jeff Szuhay
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Jeff Szuhay

Jeff Szuhay is the principal developer at QuarterTil2 which specializes in graphics-rich software chronographs for desktop environments. In his software career of over 35 years, he has engaged in a full range of development activities from systems analysis and systems performance tuning to application design, from initial development through full testing and final delivery. Throughout that time, he has taught computer applications and programming languages at various educational levels from elementary school students to university students, as well as developed and presented professional, on-site training.
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Chapter 25 – Understanding Scope

  1. The three components of scope are visibility (what can access/call a thing), extent (lifetime of the thing), and linkage (visibility across multiple files).
  2. A compilation unit is a C source file and its included header files.
  3. If a source code file has the main() function and doesn't rely upon any other source files/compilation units, it may be a complete program. Not all compilation units are complete programs.
  4. The five types of visibility scope are block scope (the narrowest), function parameter scope (a part of block scope), file scope (visibility within a file), global scope (visibility across files, tied to linkage), and static scope (a means to limit scope).
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Learn C Programming. - Second Edition
Published in: Aug 2022Publisher: PacktISBN-13: 9781801078450
© 2022 Packt Publishing Limited All Rights Reserved

Author (1)

author image
Jeff Szuhay

Jeff Szuhay is the principal developer at QuarterTil2 which specializes in graphics-rich software chronographs for desktop environments. In his software career of over 35 years, he has engaged in a full range of development activities from systems analysis and systems performance tuning to application design, from initial development through full testing and final delivery. Throughout that time, he has taught computer applications and programming languages at various educational levels from elementary school students to university students, as well as developed and presented professional, on-site training.
Read more about Jeff Szuhay

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