Compilare: user.cpp: In function ‘int main()’: user.cpp:9:14: warning: unused variable ‘a’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^ user.cpp:9:16: warning: unused variable ‘b’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^ user.cpp:9:18: warning: unused variable ‘c’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^ user.cpp:9:20: warning: unused variable ‘i’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^ user.cpp:9:22: warning: unused variable ‘d’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^ user.cpp:9:28: warning: unused variable ‘j’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^ user.cpp:9:30: warning: unused variable ‘e’ [-Wunused-variable] int n,a,b,c,i,d[11],j,e[11]; ^