hello guys, i need your help with the following C-program below. I am trying to create a number of threads which ids are always the same. The program should return for instance : Thread4 receives from Thread "thread_id" Message 3 and thank youu

#include <stdio.h>
#include <sched.h>
#include <stdlib.h>
#include <pthread.h>
#include <errno.h>
#include <process.h>
#include <sys/neutrino.h>
#include <sys/netmgr.h>
#include <semaphore.h>
#include<string.h>
#include <unistd.h>
int Received_ID_3,Received_ID_5,Connect_ID_3,Connect_ID_5,Channel_ID;
pthread_t Th3,Th4,Th5;
void *Emission_Th3()
{
char Msg_S_3[30]= "Message 3";
char Msg_R_3[30];
Connect_ID_3 = ConnectAttach(0,Th3,Channel_ID,0,0);
MsgSend(Connect_ID_3,Msg_S_3,sizeof(Msg_S_3),Msg_R_3,sizeof(Msg_R_3));
return(0);
}
void *Emission_Th5()
{
char Msg_S_5[30]= "Message 5";
char Msg_R_5[30];
Connect_ID_5 = ConnectAttach(0,Th5,Channel_ID,0,0);
MsgSend(Connect_ID_5,Msg_S_5,sizeof(Msg_S_5),Msg_R_5,sizeof(Msg_R_5));
return(0);
}
void *Reception_Th4()
{
char Received_Msg_3[200],Received_Msg_5[200];
char Rep_Msg_3[200],Rep_Msg_5[200];
struct _msg_info i3,i5;
Received_ID_3 = MsgReceive(Channel_ID,Received_Msg_3,sizeof(Received_Msg_3),&i3);
Received_ID_5 =MsgReceive(Channel_ID,Received_Msg_5,sizeof(Received_Msg_5),&i5);
MsgReply(Received_ID_3,0,Rep_Msg_3,sizeof(Rep_Msg_3));
MsgReply(Received_ID_5,0,Rep_Msg_5,sizeof(Rep_Msg_5));
printf("Le thread4 receives from Thread  %d  %s \n",pthread_self(),Received_Msg_3);
printf("Le thread4 receives from Thread  %d  %s \n",pthread_self(),Received_Msg_5);
return (0);
}
int main()
{
Channel_ID=ChannelCreate(0);
pthread_create(&Th3,NULL,&Emission_Th3,NULL);
pthread_create(&Th5,NULL,&Emission_Th5,NULL);
pthread_create(&Th4,NULL,&Reception_Th4,NULL);
sleep(2);
return EXIT_SUCCESS;
}