Compilare: user.cpp: In function ‘int expresie()’: user.cpp:26:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (s[p] == 'm' || s[p] == 'M') ^ user.cpp:26:30: warning: array subscript has type ‘char’ [-Wchar-subscripts] while (s[p] == 'm' || s[p] == 'M') ^ user.cpp:27:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[p] == 'm') ^ user.cpp: In function ‘int factor()’: user.cpp:45:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[p]=='-') ^ user.cpp:50:11: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(s[p]=='(') ^ user.cpp:57:14: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[p]>='0' && s[p]<='9') ^ user.cpp:57:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(s[p]>='0' && s[p]<='9') ^ user.cpp:59:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] val=val*10+s[p]-'0'; ^