Compilare: main.cpp: In function 'void eval(int)': main.cpp:15:11: warning: array subscript has type 'char' [-Wchar-subscripts] sol[*p]+=semn; ^ main.cpp:16:11: warning: array subscript has type 'char' [-Wchar-subscripts] viz[*p]=1; ^ main.cpp:21:19: warning: array subscript has type 'char' [-Wchar-subscripts] sol[*p]+=semn,viz[*p]=1,p+=2; ^ main.cpp:21:33: warning: array subscript has type 'char' [-Wchar-subscripts] sol[*p]+=semn,viz[*p]=1,p+=2; ^ main.cpp:23:19: warning: array subscript has type 'char' [-Wchar-subscripts] sol[*p]-=semn,viz[*p]=1,p+=2; ^ main.cpp:23:33: warning: array subscript has type 'char' [-Wchar-subscripts] sol[*p]-=semn,viz[*p]=1,p+=2; ^ main.cpp:26:7: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(*p=='(') ^