c++11交替打印ab记录

//#include
#include
#include
#include
#include

using namespace std;
std::mutex mtx;
//static long long total = 0;
//pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
//long long i = 100;;
atomic_llong i {100};
int func(int){
while(1)
{
if(0 == i%2)
{
//pthread_mutex_lock(&m);
lock_guardstd::mutexlck(mtx);
i–;
cout<<“a\n”;
//pthread_mutex_unlock(&m);
}
if(i<=0) break;
}
cout<<“thread1 exit\n”;
return 0;
}

int func2(int){
while(1)
{
if(1 == i%2)
{
//pthread_mutex_lock(&m);
lock_guardstd::mutexlck(mtx);
i–;
cout<<“b\n”;
//pthread_mutex_unlock(&m);
}
if(i<=0) break;
}
cout<<“thread2 exit\n”;
return 0;
}

int main(){
thread t1(func, 0);
thread t2(func2, 0);

t1.join();
t2.join();
//cout<

}