Compilare: user.cpp: In function ‘void ComputeLine(char*)’: user.cpp:31:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] last[ lastchar[nrcuv] ].push_back( nrcuv ); ^ user.cpp: In function ‘void print(short int)’: user.cpp:56:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( k = 0; k < cuv[i].size(); ++k ) ^ user.cpp:59:16: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] toprint[k] = NULL; ^ user.cpp: In function ‘int main()’: user.cpp:87:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] best[i] = best[ maxlast[c] ] + 1; ^ user.cpp:88:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] poz[i] = maxlast[c]; ^ user.cpp:90:51: warning: array subscript has type ‘char’ [-Wchar-subscripts] if ( best[i] > best[ maxlast[ lastchar[i] ] ] ) ^ user.cpp:92:34: warning: array subscript has type ‘char’ [-Wchar-subscripts] maxlast[ lastchar[i] ] = i; ^