Borderou de evaluare (job #501564)

Compilare: user.c: In function 'citire': user.c:6:5: warning: implicit declaration of function 'isalpha' [-Wimplicit-function-declaration] user.c: In function 'f1': user.c:16:4: warning: implicit declaration of function 'formare' [-Wimplicit-function-declaration] user.c:17:4: warning: implicit declaration of function 'compare' [-Wimplicit-function-declaration] user.c: At top level: user.c:22:6: warning: conflicting types for 'formare' [enabled by default] user.c:16:4: note: previous implicit declaration of 'formare' was here user.c: In function 'citire': user.c:11:1: warning: control reaches end of non-void function [-Wreturn-type]