Re: [Dev-C++] Re C++

[Vassili <v.v...@bt...>]

This is the way I done it for my computeach course:

after getting the string I passed it to this function

unsigned calc_hash(char *reg)
{
  char first_val, second_val[4];
  int count;
  unsigned value;

  first_val =3D *reg;    /* Store first character of regestration */
  reg++;

  /* Get the next three characters */
  for(count =3D 0; count <=3D 2; count++, reg++)
    second_val[count] =3D *reg;

  second_val[3] =3D '\0';     /* Add null character */

  value =3D first_val - 'A';    /* Subtract 'A' from the first character =
*/
  value *=3D 1000;             /* Multiply by number of records for each =
alpha character */
  value +=3D atoi(second_val);    /* Convert second_val to integer and =
add to value */

  return value;                /* return the hash */
}

hope this helps

Vas.
  ----- Original Message -----=20
  From: Kei...@ao...=20
  To: ":dev-cp"@lists.sourceforge.net=20
  Sent: Friday, July 20, 2001 8:32 PM
  Subject: [Dev-C++] Re C++


  I am trying to write a program for  vehicle registration ( a project =
for my=20
  course in C programming) which takes a string of 1letter,3 digits, 3 =
letters(=20
  UK number plate) using the 1st letter  - 'A'  * 1000 and the 3 digits =
to=20
  produce a record number to locate the  vehicle registration record. =
The  file=20
  is binary.=20
  How can I take the registration number and convert it to the record =
number.=20


  Thanks=20

  Keith  Lavington=20