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#include <iostream>
#include <string>
#include <vector>
#include <cctype>
#include <cstdlib>
#include <stdexcept>
#include <initializer_list>
 
using namespace std;
 
using string_arr = string[10];
 
string s[10] = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j"};
int odd[] = {1, 3, 5, 7};
int even[] = {0, 2, 4, 6};
 
string (&f())[10]
{
        return s;
}
 
string_arr& f1() { return s; }
 
auto f2() -> string_arr&
{
        return s;
}
 
decltype(s) &f3() { return s; }
 
decltype(odd) &g(int i)
{
        return (i % 2) ? even : odd;
}
 
 
int main(int argc, char *argv[])
{
        auto x = f3();
        auto y = g(2);
 
        for (int i = 0; i < 10; ++i)
                cout << *(x + i) << " ";
        cout << endl;
        for (const auto i : y) cout << i << endl;
}
 

prog.cpp: In function 'int main(int, char**)':
prog.cpp:45:29: error: 'begin' was not declared in this scope
         for (const auto i : y) cout << i << endl;
                             ^
prog.cpp:45:29: note: suggested alternatives:
In file included from /usr/include/c++/5/string:51:0,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/5/bits/range_access.h:87:5: note:   'std::begin'
     begin(_Tp (&__arr)[_Nm])
     ^
/usr/include/c++/5/bits/range_access.h:87:5: note:   'std::begin'
prog.cpp:45:29: error: 'end' was not declared in this scope
         for (const auto i : y) cout << i << endl;
                             ^
prog.cpp:45:29: note: suggested alternatives:
In file included from /usr/include/c++/5/string:51:0,
                 from /usr/include/c++/5/bits/locale_classes.h:40,
                 from /usr/include/c++/5/bits/ios_base.h:41,
                 from /usr/include/c++/5/ios:42,
                 from /usr/include/c++/5/ostream:38,
                 from /usr/include/c++/5/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/5/bits/range_access.h:97:5: note:   'std::end'
     end(_Tp (&__arr)[_Nm])
     ^
/usr/include/c++/5/bits/range_access.h:97:5: note:   'std::end'

Standard output is empty