Does this code give correct data. from DS18B20

unsigned char reset(void)
{
     // return ONEWIRE_ABSENT; // check
    
    Tx_18B20;
    Port_18B20 = 0;
    __delay_us(DS18B20_RESET_PULSE);
    Rx_18B20;
    __delay_us(DS18B20_WAIT_TIME);

    if (Port_18B20 == 0)
    {
        __delay_us(DS18B20_RESET_PULSE);
      
        return ONEWIRE_PRESENT;
            }
    else
    {__delay_us(DS18B20_RESET_PULSE);
    return ONEWIRE_ABSENT;
  
    }
}

void write(char WRT)
{
    
    char i,Cmd;
    Cmd = WRT;
    Rx_18B20;
  
    for(i = 0; i < 8; i++)
    {
    
        if((Cmd & (1<<i))!= 0)
        {

           Tx_18B20;
          
            Port_18B20 = 0;
            
            
            __delay_us(DS18B20_PULLUP_TIME);
            Rx_18B20;
            __delay_us(DS18B20_WAIT_TIME);
        }
        else
        {

            Tx_18B20;
            Port_18B20 = 0;
            
            __delay_us(DS18B20_WAIT_TIME);
            Rx_18B20;
        }
    }
    
}


unsigned char read()
{
    char i =0;
     result = 0;
    Rx_18B20;
  
    for(i = 0; i < 8; i++)
    {
        Tx_18B20;
         Port_18B20 = 0;
        __delay_us(1);//DS18B20_PULLUP_TIME);
        Rx_18B20;
        __delay_us(2);
    
        if(Port_18B20 != 0)
        {
            result |= 1<<i;
        
        }
        __delay_us(DS18B20_WAIT_TIME);
    }
    return result;
}


void laestemp (void)
{
    oldtemp=now;
    if(reset()==0)
            {
        
            write(Skip_ROM);   
            __delay_us(10);
            write(Convert_T);       
            __delay_ms(DS18B20_CONV_TIME);
            reset();
            write(Skip_ROM);
            __delay_us(10);
            write(Read_scratchpad);   
            //reset();
 
            
            lsb = read();
     msb = read();
     TReading = (msb<< 8) + lsb;
     SignBit = TReading & 0x8000;  // test most sig bit
     if (SignBit) // negative
     {
         TReading = (TReading ^ 0xffff) + 1; // 2's comp
     }
     Tc_100 = (6 * TReading) + TReading / 4;    // multiply by (100 * 0.0625) or 6.25

     Whole = Tc_100 / 100;  // separate off the whole and fractional portions
     Fract = Tc_100 % 100;

    
     if (SignBit) // If its negative
     {
     // do things negativ ADD 5000 to avoid negative
                now= 5000-((Whole*100)+Fract);
     }
     else
     { now=5000+((Whole*100)+Fract);
    
     }
    
    } // end temp read.
}