Thread: really got stuck with unsigned chars

Hi,
I have program that converts 16 hex chars to 8-ascii characters
while testing, i have noted that the program generates a large unsigned chars figures such 266,239, 160...
How can I get the corresoonding ascii characters from above unsigned chars ?
here is the snippet:

Code:

code
  
/* prototype */
ByteType ASCIZ(ByteType *Addr);     

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


	/* 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;
}



int Convert(ByteType val )
{
   if ((val >= 0  ) && (val <= '9' ))
        
      return val;           
   
   else ...
}