c++指针问题

error message, please

In file included from C:/Dev-Cpp/bin/../lib/gcc/mingw32/3.4.2/../../../../includ
e/c++/3.4.2/backward/iostream.h:31,
 from ds.cpp:12:
C:/Dev-Cpp/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/backward/b
ackward_warning.h:32:2: warning: #warning This file includes at least one deprec
ated or antiquated header. Please consider using one of the 32 headers found in
section 17.4.1.2 of the C++ standard. Examples include substituting the <X> head
er for the <X.h> header for C++ includes, or <iostream> instead of the deprecate
d header <iostream.h>. To disable this warning use -Wno-deprecated.
S:\TEMP/ccCObaaa.o(.text+0xd):ds.cpp: undefined reference to `std::string::size(
) const'
S:\TEMP/ccCObaaa.o(.text+0x60):ds.cpp: undefined reference to `std::string::oper
ator[](unsigned int) const'
S:\TEMP/ccCObaaa.o(.text+0x9f):ds.cpp: undefined reference to `std::string::oper
ator[](unsigned int) const'
S:\TEMP/ccCObaaa.o(.text+0xce):ds.cpp: undefined reference to `std::string::oper
ator[](unsigned int) const'
S:\TEMP/ccCObaaa.o(.text+0x134):ds.cpp: undefined reference to `__gxx_personalit
y_sj0'
S:\TEMP/ccCObaaa.o(.text+0x169):ds.cpp: undefined reference to `std::allocator<c
har>::allocator()'
S:\TEMP/ccCObaaa.o(.text+0x18a):ds.cpp: undefined reference to `std::basic_strin
g<char, std::char_traits<char>, std::allocator<char> >::basic_string(char const*
, std::allocator<char> const&)'
S:\TEMP/ccCObaaa.o(.text+0x19d):ds.cpp: undefined reference to `std::allocator<c
har>::~allocator()'
S:\TEMP/ccCObaaa.o(.text+0x1c0):ds.cpp: undefined reference to `std::allocator<c
har>::~allocator()'
S:\TEMP/ccCObaaa.o(.text+0x1ce):ds.cpp: undefined reference to `std::cout'
S:\TEMP/ccCObaaa.o(.text+0x1da):ds.cpp: undefined reference to `std::basic_ostre
am<char, std::char_traits<char> >& std::operator<< <char, std::char_traits<char>
, std::allocator<char> >(std::basic_ostream<char, std::char_traits<char> >&, std
::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
S:\TEMP/ccCObaaa.o(.text+0x1e2):ds.cpp: undefined reference to `std::basic_ostre
am<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std:
:basic_ostream<char, std::char_traits<char> >&)'
S:\TEMP/ccCObaaa.o(.text+0x1ea):ds.cpp: undefined reference to `std::ostream::op
erator<<(std::ostream& (*)(std::ostream&))'
S:\TEMP/ccCObaaa.o(.text+0x1fc):ds.cpp: undefined reference to `std::basic_strin
g<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
S:\TEMP/ccCObaaa.o(.text+0x232):ds.cpp: undefined reference to `std::basic_strin
g<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
S:\TEMP/ccCObaaa.o(.text+0x281):ds.cpp: undefined reference to `std::ios_base::I
nit::Init()'
S:\TEMP/ccCObaaa.o(.text+0x29c):ds.cpp: undefined reference to `std::ios_base::I
nit::~Init()'
collect2: ld returned 1 exit status

楼上这不是java啊.. 怎么可能转换string和string*呢..

#include <iostream>
#include <string>

using namespace std;

int main()
{
 string* s = new string("adsasd");

 cout << *s << endl;
 return 0;

}

这样的code能在dev c通过, 能在VC9通过, 但用cmd的时候就有很多不知道是什么的err
就这样:
gcc a.cpp

我错了.. 应该用g++ a.cpp这样编译

……多好的结果�