extern$26909$ - définition. Qu'est-ce que extern$26909$
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Qu'est-ce (qui) est extern$26909$ - définition

TERM
Extern variable; Extern

Extern minister         
Extern Minister; Extern Ministers; Extern ministers
In the Irish Free State, an extern minister, formally a Minister who shall not be a Member of the Executive Council, was a minister who had charge of a department but was not a member of the Executive Council. Extern ministers were individually nominated by Dáil Éireann (the lower house), whereas of the Executive Council only the President was: he in turn nominated the other members.
extern         
n.
1.
Day-scholar.
2.
(Rare.) Exterior, outward part.
External variable         
In the C programming language, an external variable is a variable defined outside any function block. On the other hand, a local (automatic) variable is a variable defined inside a function block.

Wikipédia

External variable

In the C programming language, an external variable is a variable defined outside any function block. On the other hand, a local (automatic) variable is a variable defined inside a function block.

As an alternative to automatic variables, it is possible to define variables that are external to all functions, that is, variables that can be accessed by name by any function. (This mechanism is rather like Fortran COMMON or Pascal variables declared in the outermost block.) Because external variables are globally accessible, they can be used instead of argument lists to communicate data between functions. Furthermore, because external variables remain in existence permanently, rather than appearing and disappearing as functions are called and exited, they retain their values even after the functions that set them have returned.