Thread: File read and write question - difference between zero and null ????

Hi !

I ran into a few problems while reading and writing some data to a file and here are the questions that popped up :

1. when I write a structure member which is equal to zero into a file using fwrite (file opened for writing in binary mode) does that compiler write it as null or zero ?

2. If the above wrriten value is written as zero and when i open the file for reading using fread (file opened in binary mode) does the compiler read it as a integer zero or a NULL ?

any help would be appreciated !!!!

I've done some research and here's what I've found about NULL:
"NULL is often used to indicate that a pointer points to nothing. It is simply the value 0 (either as an int or as a long). Note that in C, NULL often is defined as (void*)0. This is incorrect in C++ because there the type of NULL must be an integer type. Otherwise, you could not assign NULL to a pointer. This is because in C++ there is no automatic conversion from void* to any other type "

I know this is a C board but I think someone will find this helpfull

Micko