#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>

int main()
{
    int fd=open("trialfile", O_CREAT|O_TRUNC|O_WRONLY, 0664);
    write(fd,"hello from future father\n", sizeof("hello from future father\n"));
    /*write(fd,"hello from future father\n", 30);*/
    int ret_val=fork();
    if(ret_val==-1)
        return 1;
    if(ret_val==0)
    {
        write(fd, "hello from child\n", sizeof("hello from child\n"));
        /*write(fd, "hello from child\n", 30);*/
        return 0;
    }
    else
    {
        write(fd, "hello from father\n", sizeof("hello from father\n"));
        /*write(fd, "hello from father\n", 30);*/
        return 0;
    }
}