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2 SEQUENCING WITH
BLOCK CODING
Learning Outcomes
Introduction Recap of Loops
What is Sequencing? Examples of Sequence, Selection and Iteration
What is a Bug? Types of Loops
Nested Loop Apply Loops and Conditionals with Sequencing
Is There a Better Way to Apply Sequencing?
INTRODUCTION
In the previous class, you have learned about loops. In this chapter, you are going to learn
about sequencing and why it is important to follow sequencing in programming.
RECAP OF LOOPS
A loop is a block of code which executes multiple times till a specific condition is met.
Benefits:
Reduces lines of code.
Code becomes easier to understand.
Increment Loops
While running a loop, you need to set a condition and its number of iterations. Whenever
the condition is true, the block of code executes, this is counted as one iteration. Moving
to the next iteration, you need to increase the count of iteration to two. This is called as
incrementing a loop.
WHAT IS SEQUENCING?
A sequence in programming is an ordered set of instructions to be followed in order to
complete a task or to solve a problem. In case, if you follow the wrong order, then the task
cannot be achieved, or you may get the unexpected results.
Example of sequence is an algorithm, (Detailed step-by-step process to be followed to
complete a task or to solve a problem).
18 Touchcode-VII

