#include <pthread.h>                                                            
#include <stdio.h>                                                              
#include <sys/types.h>                                                          
#include <unistd.h>                                                             
                                                                                
void * func1(void * arg)                                                        
{                                                                               
        while(1) {                                                              
                sleep(1);                                                       
                printf("%p\n", pthread_self());                                 
        }                                                                       
}                                                                               
                                                                                
void * func2(void * arg)                                                        
{                                                                               
        while(1) {                                                              
                sleep(1);                                                       
                printf("\t%p\n", pthread_self());                               
        }                                                                       
}                                                                               
                                                                                
int main(int argc, char**argv)                                                  
{                                                                               
        pthread_t td, td2;                                                      
                                                                                
        pthread_create(&td, NULL, func1, NULL);                                 
        sleep(10);                                                              
        pthread_create(&td2, NULL, func2, NULL);                                
                                                                                
        printf("1st: %p\n2nd: %p\n", td, td2);                                  
                                                                                
        while(1) { sleep(60); }                                                 
                                                                                
        return 0;                                                               
}