Compilare: user.cpp: In function ‘int binarys1(int, int, int)’: user.cpp:29:9: warning: unused variable ‘n’ [-Wunused-variable] int n = right; ^ user.cpp: In function ‘int binarys2(int, int, int)’: user.cpp:47:9: warning: unused variable ‘n’ [-Wunused-variable] int n = right; ^ user.cpp: In function ‘int binarys0(int, int, int)’: user.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^