c - Read() is reading junk data before reading actual data -

im having issue using read() function in c.

i have file lets filex has contents:

data outputted 

however when open file , use read on garbage data using code below

ssize_t reader = 0; ssize_t writer = 0; char buffer[256]; reader = read(myfile, buffer, 256); //check if reader -1, if exit(1) writer = write(1, buffer, 256); //check if writer -1, if exit(1) 

the read function seems run twice. once bunch of garbage data followed actual data in file. idea how remedy this?

are sure buffer filled '\0', finished '\0' ? , call write 256 - in 3rd arg

#include <fcntl.h>  int main() {     const int max_size = 256;         char buffer[max_size] = {};     int my_input    = open("input", o_text, s_iread);      ssize_t reader;     ssize_t writer;     reader =  read(my_input, buffer, max_size);     if(reader != -1)         writer = write(1, buffer, reader);      return 0; }