《一秒学会C++》异步回调函数(C++11)

创建文件，复制C++代码，执行下面的命令

g++ -std=c++11 -o async_test -lpthread

#include <future>#include <iostream>#include <string>#include <functional>void func(std::string str){if (pare("Hello World 1") == 0){char pause = getchar(); // 按回车显示}std::cout << str << std::endl;}void Print(std::function< void(std::string)> Functional){auto a = std::async(std::launch::async, Functional, "Hello World 1");auto b = std::async(std::launch::async, Functional, "Hello World 2");auto c = std::async(std::launch::async, Functional, "Hello World 3");}int main(){Print(func);return 0;}