c/c++][gcc] undefined reference to 'std::basic_string ...

在编译c++代码是报以下错误

undefined reference to `std::basic_string, std::allocator >::s

ize() const'
undefined reference to `std::basic_string, std::allocator >::
operator[](unsigned int) const'
undefined reference to `std::basic_string, std::allocator >::
operator[](unsigned int) const'
undefined reference to `std::basic_string, std::allocator >::
operator[](unsigned int) const'
undefined reference to `std::cout'
undefined reference to `std::basic_ostream >& std::operator<< ::char_traits >(std::basic_ostream >&, char const*)'
undefined reference to `std::ios_base::Init::Init()'
undefined reference to `std::ios_base::Init::~Init()'

collect2: ld returned 1 exit status

解决方法是用如下命令进行编译(使用 -l 来连接 stdc++):

gcc HelloWorld.cpp -lstdc++ -o HelloWorld

另外，你也可以使用 g++, 效果是一样的, stdc++会被自动连接:

g++ HelloWorld.cpp -o HelloWorld