1004編寫一個程序，建立0~4共5個線程，而後每一個線程輸出一個hello

/*

• 編寫一個程序，建立0~4共5個線程，而後每一個線程輸出一個hello
  */

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>

#define NUM_THREADS 8

void PrintHello(void args)
{
int thread_arg;
sleep(1);
thread_arg=(int)args;
printf("Hello from thread %d\n",thread_arg);
return NULL;
}
int main(int argc, char *argv[])
{
int rc,t;
pthread_t thread[NUM_THREADS];

for(t=0;t<NUM_THREADS;t++)
{
    printf("Creating thread %d\n",t);
    rc=pthread_create(&thread[t],NULL,PrintHello,(void *)t);
    if(rc)
    {
        printf("ERROR;return code is %d\n",rc);
        return EXIT_FAILURE;
    }
}
for(t=0;t<NUM_THREADS;t++)
{
    pthread_join(thread[t],NULL);
}
return EXIT_SUCCESS;

}