demo2.cpp

#include <iostream>
#include <cstdlib>
#include <pthread.h>
 
using namespace std;
 
#define NUM_THREADS     5
 
struct thread_data{
   int  thread_id;
   char *message;
};
 
void *PrintHello(void *threadarg)
{
   struct thread_data *my_data;
 
   my_data=(struct thread_data *)threadarg;
   cout<<"id:"<<my_data->thread_id<<endl;
   cout<<"mess:"<<my_data->message<<endl;
   pthread_exit(NULL);
   return 0;
}
 

int main ()
{
   pthread_t threads[NUM_THREADS];
   struct thread_data td[NUM_THREADS];
   int rc;
   int i;
    for(i=0;i<NUM_THREADS;i++){
        cout<<"main():creating thread,"<<i<<endl;
        td[i].thread_id=i;
        td[i].message=(char*)"this is a message";
        rc=pthread_create(&threads[i],NULL,PrintHello,(void*)&td[i]);
        if(rc){
            cout<<"error"<<rc<<endl;
            exit(-1);
        }
    }
  
   pthread_exit(NULL);
}