Compilare: user.cpp: In function ‘void Read()’: user.cpp:19:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:19:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^ user.cpp: In function ‘void Solve()’: user.cpp:46:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Step[i].size();j++) ^ user.cpp:50:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] x+=dx[Code[m-'A']]; ^ user.cpp:51:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] y+=dy[Code[m-'A']]; ^ user.cpp:68:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] x+=dx[Code[m-'A']]; ^ user.cpp:69:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] y+=dy[Code[m-'A']]; ^ user.cpp: In function ‘int main()’: user.cpp:81:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cobai.out","w",stdout); ^