【学习点滴】c++ 三个线程循环打印ABC

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小试牛刀一番

#include<iostream>
#include<pthread.h>

using namespace std;

pthread_mutex_t mutex;
int k=0;    //全局区变量是共享的哦
pthread_cond_t cond =  PTHREAD_COND_INITIALIZER;

void *func1(void *arg){
    for(int i = 0 ; i<10; i++){
        pthread_mutex_lock(&mutex);
            while(k%3!=0){
                pthread_cond_wait(&cond,&mutex);
            }
                cout<<"A";
                k++;
            pthread_mutex_unlock(&mutex);
            pthread_cond_broadcast(&cond);

    }
}

void *func2(void *arg){
    for(int i = 0 ; i<10; i++){
         pthread_mutex_lock(&mutex);
            while(k%3!=1){
                pthread_cond_wait(&cond,&mutex);
            }
                cout<<"B";
                k++;
            pthread_mutex_unlock(&mutex);
            p