首次尝试linux下编程，出现问题，请指教

chenjin824

源程序是：
#include <iostream.h>

int main()
{
    cout <<"eroor"  <<endl;
}

编译时：
g++ Hello.cpp

报错如下：
[root@localhost chenjin824]# gcc  Hello.cpp
In file included from /usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../include/c++/3.4.2/backward/iostream.h:31,
                 from Hello.cpp:3:
/usr/lib/gcc/i386-redhat-linux/3.4.2/../../../../include/c++/3.4.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated 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> header for the <X.h> header for C++ includes, or <iostream> instead of the deprecated header <iostream.h>. To disable this warning use -Wno-deprecated.
/tmp/ccuP8lYD.o(.text+0xd): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
/tmp/ccuP8lYD.o(.text+0x60): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'
/tmp/ccuP8lYD.o(.text+0x9d): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'
/tmp/ccuP8lYD.o(.text+0xc8): In function `std::__verify_grouping(char const*, unsigned int, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
: undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >:perator[](unsigned int) const'
/tmp/ccuP8lYD.o(.text+0x11c): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
/tmp/ccuP8lYD.o(.text+0x129): In function `main':
: undefined reference to `std::cout'
/tmp/ccuP8lYD.o(.text+0x12e): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std:perator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccuP8lYD.o(.text+0x137): In function `main':
: undefined reference to `std::basic_ostream<char, std::char_traits<char> >:perator<<(std::basic_ostream<char, std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char> >&))'
/tmp/ccuP8lYD.o(.text+0x164): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `std::ios_base::Init::Init()'
/tmp/ccuP8lYD.o(.text+0x193): In function `__tcf_0':
: undefined reference to `std::ios_base::Init::~Init()'
/tmp/ccuP8lYD.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status

不知道什么原因，请指点下。

zbw76

#include <iostream.h>

int main()
{
cout <<"eroor" <<endl;
}
====================================
修改成这样
#include <iostream>

int main()
{
std::cout <<"eroor" <<std::endl;
}

chenjin824

多谢!
另外问下，能不能这样写：
#include<iostream>

using namespace std;

int main()
{
cout << "error" <<endl;
}

但是我尝试如上似乎仍然不行。

zbw76

可以。

zlbruce

用g++编译

ZhangJiJi

g++ -o target source.cpp