How to use sine table

 sbit UP at RB1_bit; sbit DOWN at RB2_bit;
        const unsigned char sinetable[33] = {const unsigned char sine_table[33] = {0,24,48,69,88,104,115,123,125,123,115,104,88,69,48,24,0,-24,-48,-69,-88,-104,-115,-123,-125,-123,-115,-104,-88,-69,-48,-24,0,};

};
         unsigned short new_DC, newduty;
              char t,ii;
    void debounce()
            {
             delay_ms(300);
            }
void main()
{
   TRISA=0XFF;
   TRISC=0XF0;
   TRISB=0XF8;
   CCP1CON=0XC;
   PSTR1CON=0X1F;
   PR2=249;
   T2CON=4;
   T2CON.TMR2ON=1;
   T2CON.TMR2ON=1;
//PWM1CON=    For dead time programming
   PWM1_init(15000);      //Initialise PWM at 15KHZ
while(1){
    new_dc=0; 
       if(!(PORTA.B1)){
      debounce();
      if(new_dc<249)
      new_dc=new_dc+5;   //increment duty cycle
      }
       if(!PORTA.B2){
      debounce();
      if(new_dc!=0)
      new_dc=new_dc-5; //decrement duty cycle
           }
           if(newduty!=new_dc)
           {
           newduty=new_DC;
            PWM1_Start();
           PWM1_set_duty(sine_table[newduty]) ;

            }
          }
        }