Characteristics of a Good Program

• A program should be well-written so that it can be read and understood easily.
• A program should  be properly structured and comments may be given in places required. 
• It is a good coding practice to avoid hard-coded input values in the program.
• The program should also be documented properly so that it can be edited or added later  by the same or a different programmer. 
• The program should be made portable, with less dependence on a particular operating  system, as different Operating Systems ( OS ) are available and used widely.