Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:9:18: error: ‘j’ was not declared in this scope for (j=0;j<n;j++) ^ user.cpp:10:17: error: ‘v’ was not declared in this scope v[i][j]=-2; ^ user.cpp:13:20: error: ‘x’ was not declared in this scope f>>x>>y; ^ user.cpp:13:23: error: ‘y’ was not declared in this scope f>>x>>y; ^ user.cpp:14:17: error: ‘v’ was not declared in this scope v[x][y]=-1; ^ user.cpp:16:12: error: ‘x1’ was not declared in this scope f>>x1>>x2>>y1>>y2; ^ user.cpp:16:16: error: ‘x2’ was not declared in this scope f>>x1>>x2>>y1>>y2; ^ user.cpp:16:20: error: ‘y1’ was not declared in this scope f>>x1>>x2>>y1>>y2; ^ user.cpp:16:24: error: ‘y2’ was not declared in this scope f>>x1>>x2>>y1>>y2; ^ user.cpp:17:9: error: ‘v’ was not declared in this scope v[x1][x2]=1; ^