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I want to change a 3 digits integer to characters, how can i do that?

the 3 digits integer maybe 123, 23 or 3
I want to change the integer to "123", " 23" or " 3"

thx

Alan wrote:
>
> I want to change a 3 digits integer to characters, how can i do that?
>
> the 3 digits integer maybe 123, 23 or 3
> I want to change the integer to "123", " 23" or " 3"
>

You don't want to change anything.
You want to convert an integer into its textual representation.

char Buffer[20];
int Number = 123;
sprintf( Buffer, "%d", Number );

Also: When posting to alt.comp.lang.learn.c-c++ always
indicate which language you need a solution for. There
we discuss C and C++. The C++ solution would be completely
different.

--
Karl Heinz Buchegger

"Karl Heinz Buchegger" <> ???
news: ???...
>
> Alan wrote:
> >
> > I want to change a 3 digits integer to characters, how can i do that?
> >
> > the 3 digits integer maybe 123, 23 or 3
> > I want to change the integer to "123", " 23" or " 3"
> >
>
> You don't want to change anything.
> You want to convert an integer into its textual representation.
>
> char Buffer[20];
> int Number = 123;
> sprintf( Buffer, "%d", Number );

Is there any function same as sprintf() but write to file?
because I can't find a function called "fsprintf()"
thx


> Also: When posting to alt.comp.lang.learn.c-c++ always
> indicate which language you need a solution for. There
> we discuss C and C++. The C++ solution would be completely
> different.

sorry, next time I will do so

Alan wrote:

> I want to change a 3 digits integer to characters, how can i do that?
>
> the 3 digits integer maybe 123, 23 or 3
> I want to change the integer to "123", " 23" or " 3"
>
> thx

char arr[4];
int val = 123;

arr[0] = '0' + val/100;
arr[1] = '0' + (val%100)/10;
arr[2] = '0' + val%10;
arr[3] = '\0';

printf("%s", arr);


Rick

Alan wrote:
>
> "Karl Heinz Buchegger" <> ???
> news: ???...
> >
> > Alan wrote:
> > >
> > > I want to change a 3 digits integer to characters, how can i do that?
> > >
> > > the 3 digits integer maybe 123, 23 or 3
> > > I want to change the integer to "123", " 23" or " 3"
> > >
> >
> > You don't want to change anything.
> > You want to convert an integer into its textual representation.
> >
> > char Buffer[20];
> > int Number = 123;
> > sprintf( Buffer, "%d", Number );
>
> Is there any function same as sprintf() but write to file?
> because I can't find a function called "fsprintf()"
> thx

What for?
Either fprintf() does what you need
or you first print to a character buffer and then
write that character buffer to the file.

In any case: there is no need for fsprintf

--
Karl Heinz Buchegger

On Wed, 22 Oct 2003 19:12:21 +1000, Rick <rrquick@nospam-com> wrote:

>Alan wrote:
>
>> I want to change a 3 digits integer to characters, how can i do that?
>>
>> the 3 digits integer maybe 123, 23 or 3
>> I want to change the integer to "123", " 23" or " 3"
>>
>> thx
>
>char arr[4];
>int val = 123;
>
>arr[0] = '0' + val/100;
>arr[1] = '0' + (val%100)/10;
>arr[2] = '0' + val%10;
>arr[3] = '\0';
>
>printf("%s", arr);

What is the plan if the three-digit integer is negative?

Best wishes,

Bob

Hi,


"Rick" <rrquick@nospam-com> wrote in message
news:3f9647af$...
> Alan wrote:
>
> > I want to change a 3 digits integer to characters, how can i do that?
> >
> > the 3 digits integer maybe 123, 23 or 3
> > I want to change the integer to "123", " 23" or " 3"
> >
> > thx
>
> char arr[4];
> int val = 123;
>
> arr[0] = '0' + val/100;
> arr[1] = '0' + (val%100)/10;
> arr[2] = '0' + val%10;
> arr[3] = '\0';
>
> printf("%s", arr);

this fails the OPs spec.

Why not use the standard library for things it was
made for?

Regards,
Stefan.

"Stefan Höhne" <do_not_use_this_adress@127.0.0.1> ¦b¶l¥ó
news:bn5jog$2vk$ ¤¤¼¶¼g...
> Hi,
>
> "Rick" <rrquick@nospam-com> wrote in message
> news:3f9647af$...
> > Alan wrote:
> >
> > > I want to change a 3 digits integer to characters, how can i do that?
> > >
> > > the 3 digits integer maybe 123, 23 or 3
> > > I want to change the integer to "123", " 23" or " 3"
> > >
> > > thx
> >
> > char arr[4];
> > int val = 123;
> >
> > arr[0] = '0' + val/100;
> > arr[1] = '0' + (val%100)/10;
> > arr[2] = '0' + val%10;
> > arr[3] = '\0';
> >
> > printf("%s", arr);
>
> this fails the OPs spec.

I don't understand, in what situation will it fail ?


> Why not use the standard library for things it was
> made for?

what is the standard library and how to do that ?
thx

Hi,

"Alan" <> wrote in message
news:bn5lpq$qpq$...
>
> "Stefan Höhne" <do_not_use_this_adress@127.0.0.1> ¦b¶l¥ó
> news:bn5jog$2vk$ ¤¤¼¶¼g...
> > Hi,
> >
> > "Rick" <rrquick@nospam-com> wrote in message
> > news:3f9647af$...
> > > Alan wrote:
> > >
> > > > I want to change a 3 digits integer to characters, how can i do
that?
> > > >
> > > > the 3 digits integer maybe 123, 23 or 3
> > > > I want to change the integer to "123", " 23" or " 3"
> > > >
> > > > thx
> > >
> > > char arr[4];
> > > int val = 123;
> > >
> > > arr[0] = '0' + val/100;
> > > arr[1] = '0' + (val%100)/10;
> > > arr[2] = '0' + val%10;
> > > arr[3] = '\0';
> > >
> > > printf("%s", arr);
> >
> > this fails the OPs spec.
>
> I don't understand, in what situation will it fail ?

for val=3. This solution would compute "003", the OP
(=you) explicitely wanted " 3". Of course this is easily
adopted, but needs extra logic.

> > Why not use the standard library for things it was
> > made for?
>
> what is the standard library and how to do that ?
> thx

The standard library consists of all those basic
functionality you use everyday: malloc(), printf(),
rand(), sin(), is_alpha(), ...

In this case, sprintf() would be the tool to use, as
Karl suggested.

HTH,
Stefan.

Stefan Höhne wrote:
....
> The standard library consists of all those basic
> functionality you use everyday: malloc(), printf(),
> rand(), sin(), is_alpha(), ...

I never heard of or used is_alpha().
Well, I never used isalpha as well.

Jirka