Compilare: user.cpp: In function ‘void V2()’: user.cpp:78:30: warning: unused variable ‘x4’ [-Wunused-variable] int x1=-1, x2=-3, x3=-4, x4=-5; ^ user.cpp:56:29: warning: unused variable ‘x4’ [-Wunused-variable] int x1=-1, x2=-3, x3=-4, x4=-5; ^ user.cpp:110:45: warning: ‘yc2’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<xc<<" "<<yc<<'\n'<<(char)a[xc2][yc2]; ^ user.cpp:110:45: warning: ‘xc2’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:110:19: warning: ‘yc’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<xc<<" "<<yc<<'\n'<<(char)a[xc2][yc2]; ^ user.cpp:110:10: warning: ‘xc’ may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<xc<<" "<<yc<<'\n'<<(char)a[xc2][yc2]; ^