Try your best to break your code first before telling everyone it works...

Question

not a question... I learned the hard way

Answer 1

This is a very good hint for debugging!

Answer 2

good question .Right .. It Structured programming concept called functional decomposition . decomposition means divide your code into subroutines or methods also named functions or procedures in some languages in order to make easier to catch any errors . also decomposition could help you in reusability . if you defined a function that add two numbers in a program (A) , then you can reuse it again whenever you want as a separate function . hope that answered your question