Compilare: user.cpp: In function ‘int main()’: user.cpp:9:17: warning: unused variable ‘n’ [-Wunused-variable] int a , b, n , i , d, j , ma , mx; ^ user.cpp:9:28: warning: unused variable ‘j’ [-Wunused-variable] int a , b, n , i , d, j , ma , mx; ^ user.cpp:10:9: warning: unused variable ‘sir’ [-Wunused-variable] int sir[2000000] , v[2000000] ; ^ user.cpp:28:8: warning: ‘mx’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<mx<<ma; ^