P5 explain the role of software design principles and software structures in the IT systems devel

P5 explain the role of software design principles and software structures in the IT systems devel

1. Function

   • two types of function
     • built in
       • already providded
   • user defined functions

2. Readability

   • comments
     • Ignore by computer
       • auto coloured green
       • quotation marks
     • Loop or selection

3. Pre defined code

   • Savetime
     • already tested

4. Quality of code

   • Usability
   • Reliable and robust
     • able to handle errors

5. Procedures

   • Ends with End sub
   • Starts with line code
     • Created by VB