Compilare: user.cpp: In function ‘int main()’: user.cpp:34:12: warning: unused variable ‘h’ [-Wunused-variable] { int m,n,h,w,t,nr,i,j,k,l,a,b; ^ user.cpp:34:14: warning: unused variable ‘w’ [-Wunused-variable] { int m,n,h,w,t,nr,i,j,k,l,a,b; ^ user.cpp:34:16: warning: unused variable ‘t’ [-Wunused-variable] { int m,n,h,w,t,nr,i,j,k,l,a,b; ^ user.cpp:34:18: warning: unused variable ‘nr’ [-Wunused-variable] { int m,n,h,w,t,nr,i,j,k,l,a,b; ^ user.cpp:34:25: warning: unused variable ‘k’ [-Wunused-variable] { int m,n,h,w,t,nr,i,j,k,l,a,b; ^