#include <future>
int Print(string str)
{
cout << str << endl;
return 100;
}
int main()
{
// future<int> fu = async(Print,"ni hao");
// future<int> fu = async(bind(Print,"ni hao"));
auto fu = async(Print,"ni hao");
//等待并发任务,并返回结果
cout << fu.get() << endl;
return 0;
}