Hi,

Does anyone have a good page and some exercises on the use of pointers? =

I am trying to find out why the code below won't compile line 244 I get =

invalid operand and failed to generate expression.

Thanks


char get_credit (void)
{
char test_string[]=3D"Your balance is =A34.38.";
//char *CUSD =3D "AT+CUSD=3D1,*#10#";
char *pnd_point;
char *dec_point;
int length;
char cb [5];
//char pnd=3D'=A3';
//char dec=3D'.';
int credit_pnd;
int credit_pence;
//puts ("AT+CUSD=3D1,*#10#");
//gsm_gets (rx_array);
strcpy (rx_array,test_string);
pnd_point =3Dstrchr (rx_array,'=A3');
dec_point =3Dstrchr (rx_array,0x2E);
length =3D(pnd_point - dec_point); // line 244
strncpy (cb,(pnd_point+1),(length));
credit_pnd =3D atoi (cb);
strncpy (cb,(dec_point+1),2);
credit_pence =3D atoi (cb);

if (credit_pnd >5)
{
portb.0 =3D 1;
portb.1 =3D 0;
}
else
{
portb.0 =3D 0;
portb.1 =3D 1;
}
}



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