#include "myinclude.h"

int main(){

setbuf(stdout,0);
int i;
key_t key=ftok(".",'a');
int flag=IPC_CREAT|0660;
int semid=semget(key,3,flag);
int shmid=shmget(key,sizeof(int),flag);
if(shmid<0)syserr("shmget hiba");
int* shm=shmat(shmid,0,0);
printf("%p\n",shm);

if(semid<0)syserr("semget hiba");

if(semctl(semid,0,SETVAL,1)<0) syserr("semctl1 hiba");//fiu
if(semctl(semid,1,SETVAL,0)<0) syserr("semctl2 hiba");//apa
if(semctl(semid,2,SETVAL,0)<0) syserr("semctl3 hiba");//fiu fia

FILE*f=fopen("szamok.txt","w");

pid_t p=fork();

if(p<0)syserr("fork hiba");

struct sembuf up={0,1,0};
struct sembuf down={0,-1,0};

struct sembuf up1={1,1,0};
struct sembuf down1={1,-1,0};

struct sembuf up2={2,1,0};
struct sembuf down2={2,-1,0};

//fiu
if(p==0){
pid_t p1=fork();
if(p1==0){
    for(i=0;i<10;++i){
        semop(semid,&down,1);
        *shm=0;
        fprintf(f,"%i",*shm);
        semop(semid,&up1,1);
    }
}
else{
    for(i=0;i<10;++i){
        semop(semid,&down1,1);
        *shm++;
        fprintf(f,"%i",*shm);
        semop(semid,&up2,1);
    }
}
}
//apa
else{
    for(i=0;i<10;++i){
        semop(semid,&down2,1);
        *shm++;
        fprintf(f,"%i",*shm);
        semop(semid,&up,1);
    }
wait(0);
}

return 0;
}