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cbinaryfilesfwrite

Writing number as raw binary to file

So I'm trying to write the value of a long as raw binary to a file with fwrite(), here's a test file:

#include<stdio.h>
int main() {
    FILE* stream;
    stream = fopen("write", "wb");
    long number = 0xfff;
    fwrite(&number, sizeof(long), 1, stream);
}

When opening the written file in a text editor, this is the output:

ff0f 0000 0000 0000

while I was expecting something like 0000 0000 0000 0fff.

How do I write the desired result correctly as raw binary?

Solution

  • There's no problem. You're seeing it as ff0f 0000 0000 0000 cause of the endian of the machine! Try using fread() instead!