Compilare: user.cpp: In function ‘int main()’: user.cpp:34:13: warning: unused variable ‘h’ [-Wunused-variable] { long m,n,h,w,t,nr,i,j,k,l,ma=-1,a,b; ^ user.cpp:34:15: warning: unused variable ‘w’ [-Wunused-variable] { long m,n,h,w,t,nr,i,j,k,l,ma=-1,a,b; ^ user.cpp:34:17: warning: unused variable ‘t’ [-Wunused-variable] { long m,n,h,w,t,nr,i,j,k,l,ma=-1,a,b; ^ user.cpp:34:19: warning: unused variable ‘nr’ [-Wunused-variable] { long m,n,h,w,t,nr,i,j,k,l,ma=-1,a,b; ^ user.cpp:34:26: warning: unused variable ‘k’ [-Wunused-variable] { long m,n,h,w,t,nr,i,j,k,l,ma=-1,a,b; ^ user.cpp:34:30: warning: unused variable ‘ma’ [-Wunused-variable] { long m,n,h,w,t,nr,i,j,k,l,ma=-1,a,b; ^