#include <iostream>
#include <unistd.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <fstream>


using namespace std;

int main() {

    int i;

    ofstream outFile("ReadData");
    outFile << i;
    for(i = 1; i < 10000; ++i) {
       outFile << " " << i << endl;
    }
    outFile.close();

    ifstream inFile("ReadData");

    pid_t forkID(fork());

    if( forkID == -1) {
       perror("Fork: ");
       return 1;
    }

    pid_t mypid  = getpid();

    inFile >> i;
    while(inFile) {
       cout << i << " "  << mypid << endl;
       inFile >> i;
    }

    inFile.close();

    cout << endl << endl << endl;

    int fd{open("ReadData", O_RDONLY)};
    char c;
    while(read(fd, &c, 1) == 1) {
       cout << c << " " << mypid << endl;
    }

    close(fd);


    return 0;

}