Watch List를 통해 바꾸기 

The Watch List can act as a handy tool for converting decimal and hexadecimal numbers. Here's how. 
Converting via the Watch List 
You can use the Watch List as a handy tool to convert decimal and 
hexadecimal numbers. Choose Run | Add Watch... from C++Builder's 
main menu to open the Watch Properties dialog box, then enter the 
number in the Expression field. If you're converting a hexadecimal 
number, click OK to see both the hexadecimal and decimal versions 
displayed in the Watch List window. If you're converting a 
decimal, click on the Hexadecimal radio button in the dialog box, 
then click OK. 
  

Submitted by Kent Reisdorph, TurboPower Software 
Kent is the author of "Teach Yourself C++Builder in 21 Days" (SAMS 
Publishing).