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To define a single instance of a const variable, we use the keyword extern on both its definition and declaration(s)

KasimKamal
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2022-07-03
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To define a single instance of a const variable, we use the keyword extern on both its definition and declaration(s)

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KasimKamal
2022-07-03
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// file_1.cc defines and initializes a const that is accessible to other files
extern const int bufSize = fcn();
// file_1.h
extern const int bufSize; // same bufSize as defined in file_1.cc

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