线程的helloworld

haoningabc

#include<stdio.h>#include<stdlib.h>#include<pthread.h>pthread_t appId,bnaId,cryId;int ret;int status=1;void apple(){while (1){if (status==1){status=2;printf("apple\n");}pthread_yield(bnaId,NULL);}}void banana(){while (1){if (status==2){status=3;printf("banana\n");}pthread_yield(cryId,NULL);}}void cherry(){while (1){if (status==3){status=1;printf("cherry\n");}pthread_yield(appId,NULL);}}int main(){ret=pthread_create(&appId,NULL,(void*)apple,NULL);if (ret!=0){printf("Creat Apple pthread error!\n");exit(1);}ret=pthread_create(&bnaId,NULL,(void*)banana,NULL);if (ret!=0){printf("Creat Banana pthread error!\n");exit(1);}ret=pthread_create(&cryId,NULL,(void*)cherry,NULL);if (ret!=0){printf("Creat Cherry pthread error!\n");exit(1);}pthread_join(appId,NULL);}