Compilare: user.cpp: In function ‘void rotate()’: user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:113:5: note: in expansion of macro ‘re’ re (j, N) ^ user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:112:3: note: in expansion of macro ‘re’ re (i, N) ^ user.cpp: In function ‘void check_and_rotate()’: user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:123:5: note: in expansion of macro ‘re’ re (j, N) ^ user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:121:3: note: in expansion of macro ‘re’ re (i, N) { ^ user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:130:5: note: in expansion of macro ‘re’ re (i, N) ^ user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:128:3: note: in expansion of macro ‘re’ re (j, N) { ^ user.cpp:89:46: warning: unused variable ‘_NN’ [-Wunused-variable] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:141:3: note: in expansion of macro ‘re’ re (i, min(size(normal), size(rotated))) ^ user.cpp: In function ‘int compatible(const string&, const string&)’: user.cpp:89:65: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define re(II, NN) for (int II(0), _NN(NN); (II) < (NN); ++(II)) ^ user.cpp:180:3: note: in expansion of macro ‘re’ re (i, Y.length())