Re: [Dev-C++] fwrite() & fprintf() -- binary or text ???

[Per W. <pw...@ia...>]

Don't know what you are talking about.

Test with the following source:

#include <stdio.h>

int main() {
    FILE *f;
    f = fopen("test.bin","wb");
    if (f) {
        fprintf(f,"test\n\n\n");
        fwrite("test\n\n\n",1,7,f);
        fclose(f);
    }
    f = fopen("test.txt","wt");
    if (f) {
        fprintf(f,"test\n\n\n");
        fwrite("test\n\n\n",1,7,f);
        fclose(f);
    }
    return 0;
}

Using MinGW 3.4.2 on WinXP gives:

2006-07-12  00:23                14 test.bin
2006-07-12  00:23                20 test.txt

The text file is 6 bytes larger, as expected.

Note that if same source is run on Linux, the result will be:

-rw-r--r--  1 pwm pwm      14 2006-07-12 00:25 test.txt
-rw-r--r--  1 pwm pwm      14 2006-07-12 00:25 test.bin

Same size as expected, since the text format uses a single-character
newline sequence on unix systems.

Both fprintf() and fwrite() will be affected by file opening mode when
using MSDOS or Windows compiler.

/Per W

On Tue, 11 Jul 2006, Hungry Mind wrote:

> Yes, you're right...I got the same results on Windows...Are you using it
> too?
>
>
>
> 2006/7/8, Farzan Hajian <far...@ho...>:
> >
> > hi,
> >
> > I've noticed that fwrite() writes data in binary format and fprintf()
> > writes data in text format regardless to the mode I use in fopen() to
> > open the file.
> > In this situation, what the mode argument of fopen() readlly does????
> > I've examined this, with DEV-C++ and Digital Mars compilers and both
> > have produced a same result.
> >
> > Thanx,
> >
> > --
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