#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>

typedef struct basic_file basic_FILE;

struct basic_file {
    //add
    int fd;
};

basic_FILE *basic_fopen(char *file){
    //add
    int fd = open(file, O_RDONLY);
    basic_FILE *f = malloc(sizeof(basic_FILE));
    f->fd = fd;
    return f;
}

int basic_fgetc(basic_FILE *f){
    //add
    int c;
    read(f->fd, &c,1);
    return c;
}

int main(int argc, char *argv[]) {
    if(argc < 2){
        fprintf(stderr, "Usage %s filename\n", argv[0]);       
        return 1;
    }
    
    //add
    basic_FILE *f = basic_fopen(argv[1]);

    int c = basic_fgetc(f);
    printf("%c",c);
    c = basic_fgetc(f);
    printf("%c",c);
    
    close(f->fd);

    return 0;
}