include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/wait.h>
#include <stdlib.h>


void producent(char const* FILERS ,int pipefd)
{

char bufor[100];
FILE *file;
file=fopen(FILERS, "r");
int in= fopen("potok", "r"); //// dodane

if(file==NULL){
perror("Error");
exit(1);
}
while(fgets(bufor, 100, file) != NULL)
{
printf("Przesyłam dane : %s", bufor);
write(pipefd, bufor, 100);
}
/////
if( write( in , bufor , 100 ) == -1)
            {
            perror("Funckja write zwrocila blad ");
            exit(2);
            }
//////
printf("Send..\n");
}

void konsument(char const* FILERS, int pipefd)
{
char bufor[100];
FILE * file;
file= fopen(FILERS, "w");
int out= fopen("potok", "w");
if(file==NULL){
perror("Error");
exit(1);
}


read(out, bufor,100);



int x;
do{
x=read(pipefd,bufor,100);
if(x!=0)
{
fputs(bufor,file);
printf("Odbieram dane : %s", bufor);
}

}while(x>0);
sleep(1);
printf("Accepted\n");
}


////////main/////////////////////////////


#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/wait.h>
#include <stdlib.h>

void producent( int );
void konsument( int );
char const* in="input.txt";
char const* out="output.txt";

int main()
{
mkfifo("potok", 0644);
int pipefd[2];
    if (pipe(pipefd) == -1){
        perror("Pipe error");
        exit(EXIT_FAILURE);
    }

switch(fork()) {
case -1:
perror("ErroR");
exit(EXIT_FAILURE);
break;

case 0:
close(pipefd[0]);
producent(in,pipefd[1]);
close(pipefd[1]);
break;

default:
close(pipefd[1]);
konsument(out,pipefd[0]);
close(pipefd[0]);
wait(NULL);
break;
}
return 0;