Compilare: user.c: In function ‘fact’: user.c:27:12: warning: implicit declaration of function ‘blanc’ [-Wimplicit-function-declaration] blanc(); ^ user.c:33:13: warning: implicit declaration of function ‘E’ [-Wimplicit-function-declaration] nr=E(); ^ user.c: At top level: user.c:67:13: warning: conflicting types for ‘blanc’ [enabled by default] inline void blanc(){ ^ user.c:27:12: note: previous implicit declaration of ‘blanc’ was here blanc(); ^ user.c: In function ‘fact’: user.c:43:5: warning: ‘nr’ may be used uninitialized in this function [-Wmaybe-uninitialized] return nr; ^