Eroare de compilare: user.cpp: In function ‘void rez(int)’: user.cpp:30:6: warning: unused variable ‘c’ [-Wunused-variable] int c = 0; ^ user.cpp: In function ‘int main()’: user.cpp:68:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = i+1; i < s.size(); i++) ^ user.cpp:56:15: warning: unused variable ‘x’ [-Wunused-variable] int i,g=1,nr,x,n,l,d; ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:4: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = intrare*; _Tp = intrare; _Compare = bool (*)(intrare&, intrare&)]’: /usr/include/c++/4.8/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = intrare*; _Compare = bool (*)(intrare&, intrare&)]’ /usr/include/c++/4.8/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = intrare*; _Size = int; _Compare = bool (*)(intrare&, intrare&)]’ /usr/include/c++/4.8/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = intrare*; _Compare = bool (*)(intrare&, intrare&)]’ user.cpp:79:21: required from here /usr/include/c++/4.8/bits/stl_algo.h:2287:35: error: invalid initialization of reference of type ‘intrare&’ from expression of type ‘const intrare’ while (__comp(*__first, __pivot)) ^ /usr/include/c++/4.8/bits/stl_algo.h:2290:34: error: invalid initialization of reference of type ‘intrare&’ from expression of type ‘const intrare’ while (__comp(__pivot, *__last)) ^