On 3 January 2011 09:21, Rohit Arul Raj wrote:
> Hello All,
>
> I need some clarification for fwrite.
This question has nothing to do with GCC so this mailing list is the
wrong place to ask. You should find a general C programming forum.
> #include<stdio.h>
>
> int main()
> {
> unsigned long writeBuffer [64];
> unsigned long Pos;
> unsigned long j;
>
> FILE* pFile = fopen("tmp.txt", "w+t");
>
> for(j = 0; j < 64; j++)
> writeBuffer[j] = 2560 + j * 4; // -----------------------(A)
>
> fwrite(writeBuffer, 1, 256, pFile);
>
> fgetpos(pFile, &Pos);
> printf("pos = %d\n", Pos);
>
> fclose (pfile);
> }
>
> -------------------------------------------
> Expected output : 256
> Actual Output : 320
> ---------------------------------------------
>
> 1) Can i use fwrite even though the file has been opened in text mode?
Yes.
> If yes, then will using fwrite change the file mode to binary?
No.
Text mode affects how line-endings are written on some platforms, but
you haven't said what platform you're using. It might be that a byte
with the same value as '\n' is being converted to a different sequence
of bytes.
