1. |
Is there any difference in the following declarations? |
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2. |
Suppose a program is divided into three files f1, f2 and f3, and a variable is defined in the file f1 but used in files f2 and f3. In such a case would we need the extern declaration for the variables in the files f2 and f3? |
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3. |
Global variable are available to all functions. Does there exist a mechanism by way of which it available to some and not to others. |
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4. |
Is it true that a global variable may have several declarations, but only one definition? |
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