Compilare: user.cpp: In function ‘int main()’: user.cpp:9:9: warning: unused variable ‘n’ [-Wunused-variable] int n ,max=-10000 , l2 , l1 ,c1 ,c2 , i , j , a ,b ,nr ,sc; ^ user.cpp:9:25: warning: unused variable ‘l2’ [-Wunused-variable] int n ,max=-10000 , l2 , l1 ,c1 ,c2 , i , j , a ,b ,nr ,sc; ^ user.cpp:9:54: warning: unused variable ‘b’ [-Wunused-variable] int n ,max=-10000 , l2 , l1 ,c1 ,c2 , i , j , a ,b ,nr ,sc; ^ user.cpp:9:57: warning: unused variable ‘nr’ [-Wunused-variable] int n ,max=-10000 , l2 , l1 ,c1 ,c2 , i , j , a ,b ,nr ,sc; ^