include <string>

int main()
{
std::string s1("mark "), s2("liu");
auto iter = s1.end();
iter = s1.insert(s1.end(), s2.begin(), s2.end());
return 0;
}
/g++ -std=c++11 -c /home/mark/test/p9/test.cc -o /home/mark/test/p9/test.o
/home/mark/test/p9/test.cc: 在函数‘int main()’中:
/home/mark/test/p9/test.cc:6:10: 错误：no match for ‘operator=’ (operand types are ‘gnu_cxx::normal_iterator<char, std::basic_string<char> >’ and ‘void’)
iter = s1.insert(s1.end(), s2.begin(), s2.end());
^*/