Compilare: user.cpp: In function ‘bool isIsomorphic(const char*, const char*)’: user.cpp:93:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((hash[s[i]]!=-1&&hash[s[i]]!=t[i])||(hash1[t[i]]>0)&&hash[s[i]]<0) ^ user.cpp:93:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((hash[s[i]]!=-1&&hash[s[i]]!=t[i])||(hash1[t[i]]>0)&&hash[s[i]]<0) ^ user.cpp:93:59: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((hash[s[i]]!=-1&&hash[s[i]]!=t[i])||(hash1[t[i]]>0)&&hash[s[i]]<0) ^ user.cpp:93:74: warning: array subscript has type ‘char’ [-Wchar-subscripts] if((hash[s[i]]!=-1&&hash[s[i]]!=t[i])||(hash1[t[i]]>0)&&hash[s[i]]<0) ^ user.cpp:93:63: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if((hash[s[i]]!=-1&&hash[s[i]]!=t[i])||(hash1[t[i]]>0)&&hash[s[i]]<0) ^ user.cpp:98:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] hash[s[i]] = t[i]; ^ user.cpp:99:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] hash1[t[i]]++; ^