Eroare de compilare: user.cpp: In function ‘int div(int, int)’: user.cpp:10:25: error: new declaration ‘int div(int, int)’ int div( int nr , int p ){ ^ In file included from /usr/include/c++/4.8/cstdlib:72:0, from /usr/include/c++/4.8/ext/string_conversions.h:41, from /usr/include/c++/4.8/bits/basic_string.h:2815, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/stdlib.h:785:14: error: ambiguates old declaration ‘div_t div(int, int)’ extern div_t div (int __numer, int __denom) ^ user.cpp:16:20: error: no match for ‘operator+’ (operand types are ‘int’ and ‘div_t’) suma=v[i]*i+div(nr-1,k-i); ^ user.cpp:16:20: note: candidates are: In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template<class _Iterator> std::reverse_iterator<_Iterator> std::operator+(typename std::reverse_iterator<_Iterator>::difference_type, const std::reverse_iterator<_Iterator>&) operator+(typename reverse_iterator<_Iterator>::difference_type __n, ^ /usr/include/c++/4.8/bits/stl_iterator.h:333:5: note: template argument deduction/substitution failed: user.cpp:16:33: note: ‘div_t’ is not derived from ‘const std::reverse_iterator<_Iterator>’ suma=v[i]*i+div(nr-1,k-i); ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template<class _Iterator> std::move_iterator<_Iterator> std::operator+(typename std::move_iterator<_Iterator>::difference_type, const std::move_iterator<_Iterator>&) operator+(typename move_iterator<_Iterator>::difference_type __n, ^ /usr/include/c++/4.8/bits/stl_iterator.h:1118:5: note: template argument deduction/substitution failed: user.cpp:16:33: note: ‘div_t’ is not derived from ‘const std::move_iterator<_Iterator>’ suma=v[i]*i+div(nr-1,k-i); ^ In file included from /usr/include/c++/4.8/string:52:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41,