Compilare: user.cpp: In function ‘int refac1(int)’: user.cpp:13:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int refac2(int)’: user.cpp:20:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int subsir1(int)’: user.cpp:35:13: warning: unused variable ‘p’ [-Wunused-variable] int i,j,p; ^ user.cpp: In function ‘int subsir2(int)’: user.cpp:64:13: warning: unused variable ‘p’ [-Wunused-variable] int i,j,p; ^