Compilare: user.c: In function ‘cautare0’: user.c:14:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘cautare1’: user.c:25:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘cautare2’: user.c:36:1: warning: control reaches end of non-void function [-Wreturn-type] } ^