这是什么错误啊?只是一个hello world啊

nickcheng

程序很简单

1. 
   
2. $ cat hello.cpp
   
3. #include <iostream>
   
4. using namespace std;
   
5. int main()
   
6. {
   
7.   cout<<"hello world"<<endl;
   
8.   return 0;
   
9. }
   

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下面是错误信息

$ gcc hello.cpp
/tmp/cc97HOxw.o(.text+0x14): 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/cc97HOxw.o(.text+0x21): In function `main':
: undefined reference to `std::cout'
/tmp/cc97HOxw.o(.text+0x26): 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/cc97HOxw.o(.text+0x2f): 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/cc97HOxw.o(.text+0x5c): In function `__static_initialization_and_destruction_0(int, int)':
: undefined reference to `std::ios_base::Init::Init[in-charge]()'
/tmp/cc97HOxw.o(.text+0x8b): In function `__tcf_0':
: undefined reference to `std::ios_base::Init::~Init [in-charge]()'
/tmp/cc97HOxw.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status

这是怎么回事啊??

zywwzy

用g++编译吧，应该就没事了

firewolf

你应该用g++ compile

top

晕 ！

nickcheng

谢了,已经搞定了
不过为什么用gcc不能编译呢??

kj501

因为gcc不能自动链接c++的库文件。

yc16

换言之，用手动的就能成功咯～～～
请问能否细说啊！

kj501

用g++就行了。

默难

错～即使是g＋＋也不行，代码应该改成：
[code]
#include <iostream.h>//注意：.h
int main()
{
   cout<<"hello world";
   return 0;
}

默难

错～即使是g＋＋也不行，代码应该改成：

1. 
   
2. #include <iostream.h>//注意：.h
   
3. int main()
   
4. {
   
5.    cout<<"hello world";
   
6.    return 0;
   
7. }
   

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