一 创建一个多线程
#include "test.h" #include <iostream> // std::cout #include <thread> // std::thread #include <mutex> // std::mutex std::mutex mtx; // mutex for critical section void print_block(int n, char c) { // critical section (exclusive access to std::cout signaled by locking mtx): mtx.lock(); for (int i = 0; i<n; ++i) { std::cout << c; _sleep(100); } std::cout << '\n'; mtx.unlock(); } int main(){ std::thread th1(print_block, 50, '*'); std::thread th2(print_block, 50, '$'); th1.join(); th2.join(); return 0; }
