i write a program for adc interfacing using pic 18f4580 and run my program on mplab hitech compiler and cccs environment. It is displaying values in hexadecimal. how can i display in decimal values
That depends on what you are displaying and what kind of display it is.
If it uses standard 'C' functions to format the output (printf, sprintf etc...), look in the function that returns the value and change '%x' to '%d'.