parsing GPS data

while (1)
      {
      // Place your code here

      while( getchar() != 'C'){}
      while( getchar() != ','){}
      while( getchar() != ','){}
      //while( getchar() != ','){}    //  A/V
      i=0;
      while(i<30){
        data[i]=getchar();
        i++;
        #asm ("nop");
        }
      lcd_gotoxy(0,0);
      lcd_puts("Lat: ");
      i=0;

      while(i<15){
        lcd_putchar(data[i+2]);
        i++;
        delay_ms(1);
        }
      if(data[0]=='V'){
      lcd_gotoxy(4,0);
      lcd_putchar('V');
      }
      i=0;
      lcd_gotoxy(0,1);
      lcd_puts("Lon:");
      while(i<12){
        lcd_putchar(data[i+14]);
        i++;
        delay_ms(1);
        }
        delay_ms(5000);

      //for(i=0;i<30;i++) {data[i]=' ';}

      gps_compare(); //

      }