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Kanak Sharma • 5.38K Points
Tutor III 

Q. Which C keyword is used to extend the visibility of variables?

  • (A) extend
  • (B) extends
  • (C) extern
  • (D) auto
Explanation by: Kanak Sharma 
The "extern: keyword used to define an extern variable, that can be accessed in any source file. i.e., extern is used to extend the visibility of variables in C language.

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