Compilare: user.cpp: In function ‘int Sgn(char*, char*)’: user.cpp:16:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (H1[0] && !H1[H1[0]]) H1[0]--; ^ user.cpp:17:28: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (H2[0] && !H2[H2[0]]) H2[0]--; ^ user.cpp: In function ‘void Subtract(char*, char*)’: user.cpp:45:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (!A[A[0]] && A[0]) ^ user.cpp: In function ‘void DivideHuge(char*, char*, char*, char*)’: user.cpp:105:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (!C[C[0]] && C[0]>1) C[0]--; ^ user.cpp: In function ‘void MultHuge(char*, char*, char*)’: user.cpp:121:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (T) C[++C[0]]=T; ^ user.cpp: In function ‘void Add(char*, char*)’: user.cpp:153:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (T) A[++A[0]]=T; ^ user.cpp: In function ‘int main()’: user.cpp:169:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] A[ ++A[0] ] = c - '0'; ^ user.cpp:183:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] D[ ++D[0] ] = c - '0'; ^ user.cpp:160:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("next.in", "r", stdin); ^