Compilare: user.cpp: In function ‘int main()’: user.cpp:88:17: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(lit[l]==1)lit[l]=0; ^ user.cpp:88:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(lit[l]==1)lit[l]=0; ^ user.cpp:89:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] else lit[l]=1; ^ user.cpp:90:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();++i) ^ user.cpp:92:115: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(islit(s[i]) && (s[i+1]==' ' or s[i+1]==')') && (i==0 or s[i-1]==' ' or s[i-1]=='('))S.push(lit[s[i]]); ^ user.cpp: In function ‘bool eval()’: user.cpp:61:38: warning: ‘termen’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(termen==1 && termen2==1)termen=1; else termen =0;} ^