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请问一下红色字体处的区别，及pthread_self（）和pthread_creat（）函数第一个参数的区别？
来源: 互联网 发布时间：2016-12-18
本文导语: #include #include #include /*getpid()*/ void *create(void *arg) { printf("New thread .... n"); printf("This thread's id is %u n", (unsigned int)pthread_self()); printf("The process pid is %d n",getpid()); return (void *)0; ...
#include
#include
#include /*getpid()*/
void *create(void *arg)
{
printf("New thread .... n");
printf("This thread's id is %u n", (unsigned int)pthread_self()); printf("The process pid is %d n",getpid());
return (void *)0;
}
int main(int argc,char *argv[])
{
pthread_t tid;
int error;
printf("Main thread is starting ... n");
error = pthread_create(&tid, NULL, create, NULL);
printf("thread id is %d.n", tid); if(error)
{
printf("thread is not created ... n");
return -1;
}
printf("The main process's pid is %d n",getpid());
sleep(1);
return 0;
}
#include
#include /*getpid()*/
void *create(void *arg)
{
printf("New thread .... n");
printf("This thread's id is %u n", (unsigned int)pthread_self()); printf("The process pid is %d n",getpid());
return (void *)0;
}
int main(int argc,char *argv[])
{
pthread_t tid;
int error;
printf("Main thread is starting ... n");
error = pthread_create(&tid, NULL, create, NULL);
printf("thread id is %d.n", tid); if(error)
{
printf("thread is not created ... n");
return -1;
}
printf("The main process's pid is %d n",getpid());
sleep(1);
return 0;
}
|
你使用的格式符不一样，一个是%u，一个是%d
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