Compilare: user.cpp: In function ‘int Fill(int, int)’: user.cpp:33:17: warning: unused variable ‘k’ [-Wunused-variable] int i,j,x,y,k; ^ user.cpp: In function ‘void Do2()’: user.cpp:103:19: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x<<" "<<y<<" "<<maxvalue+1<<"\n"; ^ user.cpp:103:11: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<x<<" "<<y<<" "<<maxvalue+1<<"\n"; ^