Compilare: user.cpp: In function ‘int main()’: user.cpp:71:23: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized] c[x1][y1] = b[x1][y1]; ^ user.cpp:71:23: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:97:15: warning: ‘y2’ may be used uninitialized in this function [-Wmaybe-uninitialized] g << c[x2][y2]; ^ user.cpp:97:15: warning: ‘x2’ may be used uninitialized in this function [-Wmaybe-uninitialized]