Hi,

I'm trying to compile some programs that use the getch() function,
but they fail to link:

[bruno@localhost D]$ dmd char.d
gcc char.o -o char -lphobos -lpthread -lm
char.o(.gnu.linkonce.t_Dmain+0x30): In function `_Dmain':
: undefined reference to `getch'
collect2: ld returned 1 exit status
--- errorlevel 256

Example from dsource.org:

import std.c.stdio;
import std.string;

void main()
{
    char k;

    printf("\nI'm going to ask you to press 10 keys (I promise it's
painless).\n"
    "Certain keys don't count, but the whole alphabet is fair game.\n\n");

    for(int i=0; i<10; i++)
    {
        printf("Press key: %d\t", i);
        k = getch();
        printf("[%c]\t", k);            /* print the character pressed */
        printf("[%d]\n", cast(int) k);  /* print ASCII code for key */
    }
    printf("\nThe End.\n\n");
}

I'm using dmd-0.90 in a Fedora Linux Core 2, gcc version 3.3.3

Hints???


Thanks,
Bruno.

"Bruno A. Costa" <bruno@codata.com.br> wrote in message news:c97bq0$18nm$1@digitaldaemon.com...
> Hi,
>
> I'm trying to compile some programs that use the getch() function,
> but they fail to link:
>
> [bruno@localhost D]$ dmd char.d
> gcc char.o -o char -lphobos -lpthread -lm
> char.o(.gnu.linkonce.t_Dmain+0x30): In function `_Dmain':
> : undefined reference to `getch'
> collect2: ld returned 1 exit status
> --- errorlevel 256
>
> Example from dsource.org:
>
> import std.c.stdio;
> import std.string;
>
> void main()
> {
>     char k;
>
>     printf("\nI'm going to ask you to press 10 keys (I promise it's
> painless).\n"
>     "Certain keys don't count, but the whole alphabet is fair game.\n\n");
>
>     for(int i=0; i<10; i++)
>     {
>         printf("Press key: %d\t", i);
>         k = getch();
>         printf("[%c]\t", k);            /* print the character pressed */
>         printf("[%d]\n", cast(int) k);  /* print ASCII code for key */
>     }
>     printf("\nThe End.\n\n");
> }
>
> I'm using dmd-0.90 in a Fedora Linux Core 2, gcc version 3.3.3
>
> Hints???
>
>
> Thanks,
> Bruno.


It's a Windows function (or Linux if you're using some term library). Use
getchar(). getch() returns immediatly when a key is pressed, but getchar()
waits until return is pressed and is portable.

Vathix wrote:

> "Bruno A. Costa" <bruno@codata.com.br> wrote in message news:c97bq0$18nm$1@digitaldaemon.com...
>> Hi,
>>
>> I'm trying to compile some programs that use the getch() function,
>> but they fail to link:
>>
>> [bruno@localhost D]$ dmd char.d
>> gcc char.o -o char -lphobos -lpthread -lm
>> char.o(.gnu.linkonce.t_Dmain+0x30): In function `_Dmain':
>> : undefined reference to `getch'
>> collect2: ld returned 1 exit status
>> --- errorlevel 256
>>
>> Example from dsource.org:
>>
>> import std.c.stdio;
>> import std.string;
>>
>> void main()
>> {
>>     char k;
>>
>>     printf("\nI'm going to ask you to press 10 keys (I promise it's
>> painless).\n"
>>     "Certain keys don't count, but the whole alphabet is fair
>>     game.\n\n");
>>
>>     for(int i=0; i<10; i++)
>>     {
>>         printf("Press key: %d\t", i);
>>         k = getch();
>>         printf("[%c]\t", k);            /* print the character pressed */
>>         printf("[%d]\n", cast(int) k);  /* print ASCII code for key */
>>     }
>>     printf("\nThe End.\n\n");
>> }
>>
>> I'm using dmd-0.90 in a Fedora Linux Core 2, gcc version 3.3.3
>>
>> Hints???
>>
>>
>> Thanks,
>> Bruno.
> 
> 
> It's a Windows function (or Linux if you're using some term library). Use
> getchar(). getch() returns immediatly when a key is pressed, but getchar()
> waits until return is pressed and is portable.

Yes it is a windows function. But I thought that using a standard library (phobos) I would get portable code.

Shouldn't phobos be more portable?

Thanks,

Bruno.