C how to write a binary file code example

Example 1: write a binary file c

FILE *write_ptr;

write_ptr = fopen("test.bin","wb");  // w for write, b for binary

fwrite(buffer,sizeof(buffer),1,write_ptr); // write 10 bytes from our buffer

Example 2: reading from a binary file

public static main(String[] args)
{
  Fileinputsream = new FileInputStream("");
  buffered
  
}