Compilare: user.cpp: In function ‘int main()’: user.cpp:9:13: warning: unused variable ‘cod’ [-Wunused-variable] int n,x,cod,i,u,ma,mb; ^ user.cpp:9:19: warning: variable ‘u’ set but not used [-Wunused-but-set-variable] int n,x,cod,i,u,ma,mb; ^ user.cpp:9:21: warning: variable ‘ma’ set but not used [-Wunused-but-set-variable] int n,x,cod,i,u,ma,mb; ^ user.cpp:9:24: warning: variable ‘mb’ set but not used [-Wunused-but-set-variable] int n,x,cod,i,u,ma,mb; ^