Eroare de compilare: user.cpp:10:1: error: ‘ifstream’ does not name a type ifstream fr("int.in"); ^ user.cpp:11:1: error: ‘ofstream’ does not name a type ofstream fw("int.out"); ^ user.cpp: In function ‘int main()’: user.cpp:16:5: error: ‘fr’ was not declared in this scope fr >> n; ^ user.cpp:20:40: error: ‘sort’ was not declared in this scope sort(interval + 1, interval + n + 1); ^ user.cpp:20:40: note: suggested alternative: In file included from /usr/include/c++/5/algorithm:62:0, from user.cpp:3: /usr/include/c++/5/bits/stl_algo.h:4718:5: note: ‘std::sort’ sort(_RandomAccessIterator __first, _RandomAccessIterator __last, ^ user.cpp:28:5: error: ‘fw’ was not declared in this scope fw << nr; ^ user.cpp:28:11: error: ‘nr’ was not declared in this scope fw << nr; ^