11.12Write a program to declare and use variable of register class.
register int k;
Explanation:
In the above program, the external variable ‘i’ is accessed within the scope of this program
only. Other files cannot access a static external variable that is defined in another file.
Note: The difference between an ordinary external variable and a static external variable is of scope. An
ordinary external variable is visible to all functions in the file and can be used by functions in other files. A
static external variable is visible only to functions in its own file and below the point of definition.
11.6 REgiStER ...
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