Compilare: user.cpp: In function ‘int main()’: user.cpp:12:14: warning: unused variable ‘d’ [-Wunused-variable] {int n,m,i,j,d,w,h,t,x; ^ user.cpp:12:16: warning: unused variable ‘w’ [-Wunused-variable] {int n,m,i,j,d,w,h,t,x; ^ user.cpp:12:18: warning: unused variable ‘h’ [-Wunused-variable] {int n,m,i,j,d,w,h,t,x; ^