Anscii Code and BCD code for mutual transfer

BOOL Atobcd (unsigned char* asc,unsigned char* bcd,int len)
{
int i;
unsigned char ch; High
unsigned char cl; Low
unsigned char temp1;
unsigned char temp2;
unsigned char *retrun;

Retrun = new unsigned char[len/2+1];

memset (retrun,0,len/2+1);

for (i=0;i<len/2;i++)
{
Temp1 = Asc[2*i]; High
Temp2 = asc[2*i+1]; Low

if (Temp1 >= ' A ' && temp1 <= ' F ') | | (Temp1 >= ' a ' && temp1 <= ' F '))
{
ch = (((temp1-7) & 0x0f) <<4) & 0xFF;
}
else if (Temp1 >= ' 0 ' && temp1 <= ' 9 ')
{
ch = ((Temp1 & 0x0f) <<4) & 0xFF;
}
Else
{
return false;
}

//*************************************************************************//

if (temp2 >= ' A ' && temp2 <= ' F ') | | (Temp2 >= ' a ' && temp2 <= ' F '))
{
CL = ((temp2-7) & 0x0f) & 0xFF;
}
else if (Temp2 >= ' 0 ' && temp2 <= ' 9 ')
{
CL = (Temp2 & 0x0f) & 0xFF;
}
Else
{
return false;
}

Retrun[i] = ch | Cl
}

memcpy (BCD,RETRUN,LEN/2);
delete []retrun;

return true;
}

unsigned char *bcdtoa (unsigned char * Data, int Len)
{
int i,j;
unsigned char temp1,temp2;
unsigned char ptr[500];
unsigned char *ptr;
j=0;

for (i=0;i<len;i++)
{
Temp1=data[i];
TEMP2=TEMP1 & 0x0f;
if ((temp2>=0x00) && (temp2<=0x09))
{
ptr[i*2+1]=temp2+0x30;
}
Else
{
if (temp2==10)
ptr[i*2+1]= ' A ';
else if (temp2==11)
ptr[i*2+1]= ' B ';
else if (temp2==12)
ptr[i*2+1]= ' C ';
else if (temp2==13)
ptr[i*2+1]= ' D ';
else if (temp2==14)
ptr[i*2+1]= ' E ';
else if (temp2==15)
ptr[i*2+1]= ' F ';
}

Temp1=data[i];
temp2=temp1>>4;
TEMP2=TEMP2 & 0x0f;

if ((temp2>=0x00) && (temp2<=0x09))
{
ptr[i*2]=temp2+0x30;
}
Else
{
if (temp2==10)
ptr[i*2]= ' A ';
else if (temp2==11)
ptr[i*2]= ' B ';
else if (temp2==12)
ptr[i*2]= ' C ';
else if (temp2==13)
ptr[i*2]= ' D ';
else if (temp2==14)
ptr[i*2]= ' E ';
else if (temp2==15)
ptr[i*2]= ' F ';

}
}
ptr = ptr;
return (PTR);
}

Anscii Code and BCD code for mutual transfer