Page 80 - Viva ICSE Computer Studies 8 : E-book

6 Decision Control Structure

Learning Outcomes
Let’s Learn About
Students will be able to
• Selec on Control Structure
• identify the fl ow of control in selection statements.
• Looping Control Structure
• design a program with appropriate selection statements.

Activity Corner

1. In our daily life, we make decisions using our _______________.
(a) brain (b) computer (c) mobile

2. Can you perform the task of cooking 15 times a day?

Yes No

When we are executing programs, there are times that we want to change the order of execution of
program statements, or to repeat a particular set of statements. For these kind of conditions, we need to
take logical decisions. In our day-to-day life, any decision we make depends on various conditions.

In our day-to-day life, we make decisions and act accordingly. Similarly, a computer also decides
about its actions before making decisions. Every decision involves a choice based on a simple
Yes or No. To implement this, control structures are used.

In control structures, the conditions are specifi c and as per these conditions actions take place.
Now let’s learn more about control structures.
Java consists of three conditional control structures. They are as follows.

• Selection Control Structure
• Looping Control Structure
• Jumping Control Structure

In this chapter we will only study about selection control structure and looping control
structure. Jumping control structure will be studied in higher classes.

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