Realization of producer consumer problem in Linux environment

#include<stdio.h>#include<semaphore.h>#include<stdlib.h>#include<pthread.h>#include<unistd.h>#defineN1 3//definition of 3 producers#defineN2 4//definition of 4 consumers#defineM 10//define 10 size buffersint inch=0;int  out=0;intBuff[m] = {0};//buffer size is tensem_t Empty_sem;//number of empty buffersSem_t Full_sem;//number of full bufferspthread_mutex_t Mutex;//mutually exclusive access buffersintproduct_id =0;intconsumer_id =0;intdata; FILE*FP;void*product () {intID = + +product_id;  while(1) {Sleep (1); Sem_wait (&Empty_sem); Pthread_mutex_lock (&mutex); //if (feof (fp)! = 0) fseek (FP, 0, Seek_set);        if(FP, fscanf"%d", &data) = =EOF) {fseek (FP),0, Seek_set); FSCANF (FP,"%d", &data); }        inch=inch%M; buff[inch] =data; printf ("Producter%d produce%d in position%d\n", ID, buff[inch],inch); ++inch; Pthread_mutex_unlock (&mutex); Sem_post (&Full_sem); }}void*consume () {intID = + +consumer_id;  while(1) {Sleep (1); Sem_wait (&Full_sem); Pthread_mutex_lock (&mutex);  out= out%M; printf ("Consumer%d take product%d in position%d\n", ID, buff[ out], out); buff[ out] =0; ++ out; Pthread_mutex_unlock (&mutex); Sem_post (&Empty_sem); }}intMain () {pthread_t id1[n1];//Defining producer Threadspthread_t ID2[N2];//Defining consumer Threads    inti; intRET1[N1]; intRET2[N2]; intIni1 = Sem_init (&empty_sem,0, M);//Initialize the empty buffer to M (TEN)    intIni2 = Sem_init (&full_sem,0,0);//Initialize full buffer 0    if(Ini1 && Ini2! =0) {printf ("Sem Init failed\n"); Exit (1); }    intIni3 = Pthread_mutex_init (&mutex, NULL);//Initialize the mutex signal volume    if(Ini3! =0) {printf ("Mutex init failed\n"); Exit (1); } FP= fopen ("/.data.txt","R");//Open File Data.txt    if(fp = = NULL) exit (1);  for(i =0; i < N1; i++) {Ret1[i]= Pthread_create (&id1[i], NULL, product, (void*) (&i));//Create a producer thread        if(Ret1[i]! =0) {printf ("product%d creat failed\n", i); Exit (1); }    }     for(i =0; i< N2; i++) {Ret2[i]= Pthread_create (&id2[i], NULL, consume, NULL);//Create a consumer thread        if(Ret2[i]! =0) {printf ("consumer%d creat failed\n", i); Exit (1); }    }     for(i =0; i < N1; i++{pthread_join (id1[i], NULL);}  for(i =0; i < N2; i++{pthread_join (id2[i], NULL);} Exit (0);}

Realization of producer consumer problem in Linux environment