Function storage class specifiers

For a function, the storage class specifier determines the linkage of the function. By default, function definitions have external linkage, and can be called by functions defined in other files. An exception is inline functions, which are treated by default as having internal linkage; see Linkage of inline functions for more information.

A storage class specifier may be used in both function declarations and definitions. The only storage class options for functions are:

• static
• extern