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Linking problem with string class

Hi Guys,

I am trying to write some code using the string class in C++ . Heres a segment of the code :-

Code:

#include <stdio.h>

#include <netinet/tcp.h>

#include <netinet/in.h>

#include <stdlib.h>

#include <string>



using std::string;

class Checksum

{

 private:

  struct tcphdr *tcp;

  uint16_t temp_short;

  uint32_t temp_long;

  string hex_final;

 public:

  void init_header();

  void decimaltohex();

};



Checksum check;

However when I compile it using gcc I get these errors:-

Code:

[root@localhost project]# gcc -o checksum checksum.cpp

/tmp/ccBQQu6W.o(.gnu.linkonce.t._ZN8ChecksumC1Ev+0x11): In function `Checksum::Checksum[in-charge]()':

: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string[in-charge]()'

/tmp/ccBQQu6W.o(.gnu.linkonce.t._ZN8ChecksumD1Ev+0x11): In function `Checksum::~Checksum [in-charge]()':

: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string [in-charge]()'

/tmp/ccBQQu6W.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'

collect2: ld returned 1 exit status

I'm guessing these are linking errors ; but havent a clue how to get around them.Any help is appreciated.
Thnx
Arvind

you need to use g++ to compile c++ code.
g++ will then probably complain about depreciated header files, so you need to use
#include <cstdio>
#include <cstdlib>
instead of stdio.h and cstdlib.h

thnx a lot...will try this...but these errors started to come up only after I started to use the String class...

yea, the string class is a c++ header file. the other headers are c header files. I'm not sure, but i don't think the c compiler is aware of any of the c++ header files. anybody else know the details on what directories are in the default path that the compiler looks for header files?

hey thnx 4 replying ...I got it sorted out ...if you use :-

Code:

using namespace std;

it take away all bad bad errors:)...thnx 4 helpin..
Arvind