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#include <iostream>
#include <vector>
 
using namespace std;
 
const size_t sizeOfPoint = 9;
 
class Pixel
{
public:
    Pixel() : x(0), y(0)
    {
        //do something
    }
    int x,y;
};
 
int main()
{
    Pixel point[sizeOfPoint];
 
    for(size_t i=0; i<sizeOfPoint; i++)
    {
        cout<<point[i].x<<", "<<point[i].y<<endl;
    }
 
    cout<<endl;
 
    //use vector
    vector<Pixel> vecPoint(9, Pixel());
 
    for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
    {
        cout<<i->x<<", "<<i->y<<endl;
    }
 
    return 0;
}
 
 

prog.cpp: In function ‘int main()’:
prog.cpp:32:9: warning: ‘auto’ changes meaning in C++11; please remove it [-Wc++0x-compat]
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
         ^
prog.cpp:32:14: error: ‘i’ does not name a type
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
              ^
prog.cpp:32:36: error: expected ‘;’ before ‘i’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                    ^
prog.cpp:32:36: error: name lookup of ‘i’ changed for ISO ‘for’ scoping [-fpermissive]
prog.cpp:32:36: note: (if you use ‘-fpermissive’ G++ will accept your code)
prog.cpp:32:38: error: no match for ‘operator!=’ (operand types are ‘size_t {aka unsigned int}’ and ‘std::vector<Pixel>::iterator {aka __gnu_cxx::__normal_iterator<Pixel*, std::vector<Pixel> >}’)
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                      ^
prog.cpp:32:38: note: candidates are:
In file included from /usr/include/c++/4.8/iosfwd:40:0,
                 from /usr/include/c++/4.8/ios:38,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/postypes.h:221:5: note: template<class _StateT> bool std::operator!=(const std::fpos<_StateT>&, const std::fpos<_StateT>&)
     operator!=(const fpos<_StateT>& __lhs, const fpos<_StateT>& __rhs)
     ^
/usr/include/c++/4.8/bits/postypes.h:221:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::fpos<_StateT>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0,
                 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/stl_pair.h:227:5: note: template<class _T1, class _T2> bool std::operator!=(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&)
     operator!=(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y)
     ^
/usr/include/c++/4.8/bits/stl_pair.h:227:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::pair<_T1, _T2>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:303:5: note: template<class _Iterator> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&)
     operator!=(const reverse_iterator<_Iterator>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:303:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::reverse_iterator<_Iterator>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:353:5: note: template<class _IteratorL, class _IteratorR> bool std::operator!=(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&)
     operator!=(const reverse_iterator<_IteratorL>& __x,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:353:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::reverse_iterator<_Iterator>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
In file included from /usr/include/c++/4.8/string:41:0,
                 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:138:5: note: template<class _T1, class _T2> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_T2>&)
     operator!=(const allocator<_T1>&, const allocator<_T2>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:138:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::allocator<_CharT>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
In file included from /usr/include/c++/4.8/string:41:0,
                 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/allocator.h:143:5: note: template<class _Tp> bool std::operator!=(const std::allocator<_CharT>&, const std::allocator<_CharT>&)
     operator!=(const allocator<_Tp>&, const allocator<_Tp>&)
     ^
/usr/include/c++/4.8/bits/allocator.h:143:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::allocator<_CharT>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2532:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::basic_string<_CharT, _Traits, _Alloc>&, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2532:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::basic_string<_CharT, _Traits, _Alloc>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2544:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const _CharT*, const std::basic_string<_CharT, _Traits, _Alloc>&)
     operator!=(const _CharT* __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2544:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const _CharT*’ and ‘unsigned int’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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,
                 from /usr/include/c++/4.8/ios:42,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/basic_string.h:2556:5: note: template<class _CharT, class _Traits, class _Alloc> bool std::operator!=(const std::basic_string<_CharT, _Traits, _Alloc>&, const _CharT*)
     operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
     ^
/usr/include/c++/4.8/bits/basic_string.h:2556:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::basic_string<_CharT, _Traits, _Alloc>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
In file included from /usr/include/c++/4.8/bits/locale_facets.h:48:0,
                 from /usr/include/c++/4.8/bits/basic_ios.h:37,
                 from /usr/include/c++/4.8/ios:44,
                 from /usr/include/c++/4.8/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/streambuf_iterator.h:210:5: note: template<class _CharT, class _Traits> bool std::operator!=(const std::istreambuf_iterator<_CharT, _Traits>&, const std::istreambuf_iterator<_CharT, _Traits>&)
     operator!=(const istreambuf_iterator<_CharT, _Traits>& __a,
     ^
/usr/include/c++/4.8/bits/streambuf_iterator.h:210:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::istreambuf_iterator<_CharT, _Traits>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
In file included from /usr/include/c++/4.8/vector:64:0,
                 from prog.cpp:2:
/usr/include/c++/4.8/bits/stl_vector.h:1427:5: note: template<class _Tp, class _Alloc> bool std::operator!=(const std::vector<_Tp, _Alloc>&, const std::vector<_Tp, _Alloc>&)
     operator!=(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
     ^
/usr/include/c++/4.8/bits/stl_vector.h:1427:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const std::vector<_Tp, _Alloc>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
In file included from /usr/include/i386-linux-gnu/c++/4.8/bits/c++allocator.h:33:0,
                 from /usr/include/c++/4.8/bits/allocator.h:46,
                 from /usr/include/c++/4.8/string:41,
                 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/ext/new_allocator.h:144:5: note: template<class _Tp> bool __gnu_cxx::operator!=(const __gnu_cxx::new_allocator<_Tp>&, const __gnu_cxx::new_allocator<_Tp>&)
     operator!=(const new_allocator<_Tp>&, const new_allocator<_Tp>&)
     ^
/usr/include/c++/4.8/ext/new_allocator.h:144:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const __gnu_cxx::new_allocator<_Tp>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:823:5: note: template<class _Iterator, class _Container> bool __gnu_cxx::operator!=(const __gnu_cxx::__normal_iterator<_Iterator, _Container>&, const __gnu_cxx::__normal_iterator<_Iterator, _Container>&)
     operator!=(const __normal_iterator<_Iterator, _Container>& __lhs,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:823:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const __gnu_cxx::__normal_iterator<_Iterator, _Container>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); 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/ostream:38,
                 from /usr/include/c++/4.8/iostream:39,
                 from prog.cpp:1:
/usr/include/c++/4.8/bits/stl_iterator.h:817:5: note: template<class _IteratorL, class _IteratorR, class _Container> bool __gnu_cxx::operator!=(const __gnu_cxx::__normal_iterator<_IteratorL, _Container>&, const __gnu_cxx::__normal_iterator<_IteratorR, _Container>&)
     operator!=(const __normal_iterator<_IteratorL, _Container>& __lhs,
     ^
/usr/include/c++/4.8/bits/stl_iterator.h:817:5: note:   template argument deduction/substitution failed:
prog.cpp:32:54: note:   mismatched types ‘const __gnu_cxx::__normal_iterator<_IteratorL, _Container>’ and ‘size_t {aka unsigned int}’
     for(auto i = vecPoint.begin(); i != vecPoint.end(); i++)
                                                      ^
prog.cpp:34:16: error: base operand of ‘->’ is not a pointer
         cout<<i->x<<", "<<i->y<<endl;
                ^
prog.cpp:34:28: error: base operand of ‘->’ is not a pointer
         cout<<i->x<<", "<<i->y<<endl;
                            ^

Standard output is empty