我剛開始學習C++。當我使用GCC編譯版本,下面的代碼:GCC(Ubuntu的5.2.1-22ubuntu2)5.2.1 20151010 我得到這個錯誤:C++程序無法編譯
的gcc -o tst.cpp mytst
/tmp/ccGA15Qf.o: In function `main':
tst.cpp:(.text+0xa): undefined reference to `std::cout'
tst.cpp:(.text+0xf): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
tst.cpp:(.text+0x19): undefined reference to `std::cout'
tst.cpp:(.text+0x1e): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::operator<< <std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
/tmp/ccGA15Qf.o: In function `__static_initialization_and_destruction_0(int, int)':
tst.cpp:(.text+0x4c): undefined reference to `std::ios_base::Init::Init()'
tst.cpp:(.text+0x5b): undefined reference to `std::ios_base::Init::~Init()'
collect2: error: ld returned 1 exit status
和這裏是我的代碼:
#include <iostream>
int main()
{
std::cout << "Hello World! ";
std::cout << "I'm a C++ program";
}
怎麼回事?
@Satya不PRO提示。 – LogicStuff
OP沒有錯過任何'std ::'和[this](http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-in-c-considered-bad-practice)。 – LogicStuff
@Satya沒什麼,只是刪除評論。這完全是無意義的。 – juanchopanza