###### tags: `作業系統`
# *2022/10/11 作業_Version02*
## 題目：
Please write a program that has multiple threads,which two or more threads run at the same time.
## 程式碼

#include <bits/stdc++.h>

using namespace std;

void thread_1(void);
void thread_2(void);
int main(int argc, const char * argv[]) {
    thread t1(thread_1);//Build thread 1
    thread t2(thread_2);//Build thread 2
    std::this_thread::sleep_for(std::chrono::seconds(1));
    cout<<"Main function, thread_1 and thread_2 finished!"<<endl;
    cout<<"Thread_1 end"<<endl;
    t1.join();//Wait for the output of thread_1
    cout<<"Thread_2 end"<<endl;
    t2.join();//Wait for the output of thread_2
    return 0;
}

void thread_1(void){
    cout<<"Hello"<<endl;
    cout<<"This is thread_1"<<endl;
}
void thread_2(void){
    cout<<"Hello"<<endl;
    cout<<"This is thread_2"<<endl;
}

## 輸出結果

Hello
This is thread_1
Hello
This is thread_2
Main function, thread_1 and thread_2 finished!
Thread_1 end
Thread_2 end
Program ended with exit code: 0