Compilare: user.cpp: In function ‘int main()’: user.cpp:7:17: warning: unused variable ‘a’ [-Wunused-variable] int v,d,h,g,a,b,c,e,f,v1,h1,g1; ^ user.cpp:7:19: warning: unused variable ‘b’ [-Wunused-variable] int v,d,h,g,a,b,c,e,f,v1,h1,g1; ^ user.cpp:7:21: warning: unused variable ‘c’ [-Wunused-variable] int v,d,h,g,a,b,c,e,f,v1,h1,g1; ^ user.cpp:7:23: warning: unused variable ‘e’ [-Wunused-variable] int v,d,h,g,a,b,c,e,f,v1,h1,g1; ^