Compilare: user.cpp: In function ‘int cit()’: user.cpp:48:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (buf[bp] == 0 || bp >= 500000) { ^ user.cpp:54:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (buf[bp] == ' ' || buf[bp] == '\n') bp++; ^ user.cpp:54:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (buf[bp] == ' ' || buf[bp] == '\n') bp++; ^ user.cpp:55:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] if (buf[bp] == '-') semn = -1,bp++; ^ user.cpp:56:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ('0' <= buf[bp] && buf[bp] <= '9') ^ user.cpp:56:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ('0' <= buf[bp] && buf[bp] <= '9') ^ user.cpp:57:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] res = 10*res + buf[bp]-'0',bp++; ^ user.cpp:62:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ('0' <= buf[bp] && buf[bp] <= '9') ^ user.cpp:62:33: warning: array subscript has type ‘char’ [-Wchar-subscripts] while ('0' <= buf[bp] && buf[bp] <= '9') ^ user.cpp:63:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] res = 10*res + buf[bp]-'0',bp++; ^