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The function cout.fill ( ) specifies the character to be used to fill the leading part of the next output field . There is a security problem when using tmpnam ( ) and fopen ( ) in versionsprior to 0.91 . In order to use the abbreviated form functionname ( arguments ) , run the command ' withSF ( ) ' . If the module Module is not loaded yet , then the above declaration declares functions func1 ( ) and func2 ( ) in the current package , and declares a function Module : : func3 ( ) . This module 's default exports override the core getgrent ( ) , getgruid ( ) , and getgrnam ( ) functions , replacing them with versions that return " User : : grent " objects . This module 's default exports override the core getgrent ( ) , getgruid ( ) , and getgrnam ( ) functions , replacing them with versions that return `` User : : grent '' objects .