Repetition

Three (3) main things in repetition process are : 

• Initialization
• Evaluation / checking
• updating - increment & decrement process

1. before start write a C++ program, we need to identify LCV (Loop Counter Variable).
2. step 2 , identify or determine the operation.
1. how many it will loop / repeat
2. what is the initial value, e.g counter = 1, cin>>mark;
3. checking or evaluate , e.g counter <10
4. update . e,g counter = counter + 1, cin >>mark 

 how to form a condition.

1. e.g while (variable < = condition)
2. your condition must generate an answer either "TRUE" or "FALSE"
3. using an operator :
1. relational - >, < , >= , <=, == , !=
2. logical -   &&, || , !

LCV - Loop Counter Variable

1. to determine a LCV, we need to understand the problem either we know the counter controlled or we don't know how many times the process will loop (sentinel controlled).
2. counter controlled - counter < 10, bil < 9 etc.
3. sentinel controlled - choice != 'y' , mark <0. etc