How is an external variable defined? How is it initialised? What happe

Question

How is an external variable defined? How is it initialised? What happens when an external variable definition does not include the assignment of an initial value?

26 Feb 2024

Answer :

Word Count : 363

An external variable is a variable that is declared outside of any function and can be accessed by multiple source files within a program. It is declared with the `extern` keyword in the files where it is used, and its definition (memory allocation) typically resides in one of the source files.

1. **Definition of an External Variable**:
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