about testing a program

Hi,

I was working on a program convert 16-HEXA-character key to be 8-ASCII-character key. apparently I am having problem for testing it because it producces strange symbols it also uses an auxilary program that converts Hex value into decimal.

Can anyone see if the way I am testing the program is correct ?

Code:

---

code


int main()
{
  int i;
  ByteType y;
  ByteType X [16] = "FFFFFFFFFFFFFFFF";
  for( i = 0 ; i < 16; i++)
  {
      y = ASCIZ( &X[i]) ;
      printf("the corresponding characters are %c\n", y); 
    }

}   

ByteType ASCIZ(ByteType *Addr)
{
        int i, v1, v2;
        ByteType a1, a2, v;


        /* Convert 16-HEXA-character key to be 8-ASCII-character key. */
        for (i = 0; i < 8; i++)
        {
                a1 = *Addr++;
                if (i == 7)
                        a2 = *Addr;
                                else
                        a2 = *Addr++;
                    /* Convert two HEXA characters into their decimal value. */
                v1 = Convert(a1);
                v2 = Convert(a2);

                /* Convert the two decimal value to be one ASCII character. */
                v = ((v1 * 16) + v2);
        }
       
          return  v;
}



/* there is function that converts Hex to decimal */
int Convert(ByteType val )
{
  if ((val >= 0  ) && (val <= '9' ))
       
      return val;         
 
  else ...
 
}

---

For easy conversion to-and-from b/w number systems...use

char* itoa(int value, char *string, int radix);

where radix = number system (e.g. 16 for hex,8 for octadeci, 10 for ...)

for further info. see your nearest online help...