IO进程day6

1、思维导图

https://www.zhixi.com/view/bed0eee2

2、作业

#include 
char buf[]="1234567";

void *A(void *a)
{
	char s[100];
	strcpy(s,*a);
	while(1)
	{
		printf("%s\n",s);
	}
}

void *B(void *b)
{
	char s[100]=(char*)malloc(100);
	strcpy(s,buf);
	while(1)
	{
		int i=0,j=strlen(s)-1;
		while(i>j)
		{
			char c=s[i];
			s[i]=s[j];
			s[j]=c;
			i++;
			j--;
		}
		free(s);
		pthread_exit((void*)s);
	}
}

int main(int argc, const char *argv[])
{
	while(1)
	{
		pthread_t b;
		if(pthread_create(&b,NULL,B,NULL)!=0)//创建B线程
		{
			printf("error:%d\n",__LINE__);
			return -1;
		}
		char *s=NULL;
		pthread_join(b,ptr);
		pthread_t a;
		if(pthread_create(&a,NULL,A,(void*)&s)!=0)//创建A线程
		{
			printf("error:%d\n",__LINE__);
			return -1;
		}

		printf("--------------------------------------------------\n");
	}
	return 0;
}