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What is difference between extern and global?



What is difference between extern and global?..

Answer / Lokesh Kumar Singh

In Objective-C, 'extern' is a keyword used to declare variables that are visible outside of their current file scope. A 'global' variable is simply a variable with file scope that can be accessed from any part of the file. However, using extern does not create a global variable; it just declares that the variable is defined elsewhere.

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