Programming

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
#include <string.h>
#define BUFF_SIZE 256


#define CHILDS 4
#define DATAFILE "Client_Files.txt"

void worker(int n);
char str_buf[BUFF_SIZE];
FILE *datafile_fp;
int i;
    
char str_buf[BUFF_SIZE];
pid_t id[CHILDS];

int main() {

    if((datafile_fp = fopen( DATAFILE, "r"))== NULL)
    printf("grimi");



    
    for ( i = 0; i < CHILDS; i++ ){
        id[i] = fork();
        if( id[i] == 0 ){
            worker(i);
            exit(0);
        }
        else if ( id[i] == -1 ){
            printf("fork error.\n");
            exit(0);
        }
        else {    
            //stuff;
        }

    }
    
}

void worker(int n) {
    fgets(str_buf, BUFF_SIZE, datafile_fp);
    printf("%c",str_buf[0]);
    
}

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#define CHILDS_N 5

void worker(int * fd)
{
        char buf[20];

        memset (buf, 0x0, sizeof (buf));
        read(*fd, buf, sizeof (buf)-1);
        printf ("%s\n", buf);

}


int
main ()
{
        pid_t childs[CHILDS_N];
        int fd;
        int i;
        fd = open ("Client_Files.txt", O_RDONLY);
        if (fd == -1)
                exit(1);


        for (i=0; i < CHILDS_N; i++)
        {
                childs[i] = fork();
                if (childs[i] == 0)
                {
                        worker(&fd);
                }
                else
                {
//                      printf ("parent: %d\n", getpid());
                }
        }
}