Compilare: user.cpp: In function ‘void read()’: user.cpp:48:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] ParM[ch2][ch3] = cod(ParM[ch2][ch3],ch1); ^ user.cpp:48:26: warning: array subscript has type ‘char’ [-Wchar-subscripts] ParM[ch2][ch3] = cod(ParM[ch2][ch3],ch1); ^ user.cpp:48:42: warning: array subscript has type ‘char’ [-Wchar-subscripts] ParM[ch2][ch3] = cod(ParM[ch2][ch3],ch1); ^ user.cpp:48:47: warning: array subscript has type ‘char’ [-Wchar-subscripts] ParM[ch2][ch3] = cod(ParM[ch2][ch3],ch1); ^ user.cpp:53:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] Parm[ch2] = cod(Parm[ch2],ch1); ^ user.cpp:53:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] Parm[ch2] = cod(Parm[ch2],ch1); ^ user.cpp: In function ‘void solve()’: user.cpp:69:32: warning: array subscript has type ‘char’ [-Wchar-subscripts] D[i][i] = Parm[S[i]]; ^