Compilare: user.cpp: In function ‘void rez()’: user.cpp:23:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(lit[sc[j]]==0)lit[sc[j]]=1; ^ user.cpp:23:31: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(lit[sc[j]]==0)lit[sc[j]]=1; ^ user.cpp:24:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] else lit[sc[j]]=0; ^ user.cpp: In function ‘bool termen()’: user.cpp:76:25: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((lit[t[i]]==0 && semn==0) or (lit[t[i]]==1 && semn==1))r=0; ^ user.cpp:76:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((lit[t[i]]==0 && semn==0) or (lit[t[i]]==1 && semn==1))r=0; ^ user.cpp:84:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if((i+4)<s.size() && s[i+4]=='2') ^ user.cpp: In function ‘int main()’: user.cpp:104:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<t.size();++i) ^