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Activity 8.5 which instructions are executed, enabling
them to make decisions and repeat actions
Study the rules for writing algorithms as needed. There are three basic types Computer Science
and pseudocode, then do the of control structures that flowcharts
FOR ONLINE READING ONLY
following: and pseudocode operations employ. In
1. Write an algorithm to find the drawing flowcharts, control structures can
be used to represent control of the process
area of a circle of radius r. Then, flow in terms of sequence, selection, and
represent it using pseudocode. iteration, as shown in Figure 8.7.
2. Write an algorithm to read three
numbers and find their sum and then, Sequence Selection Iteration
represent it using pseudocodes.
T F
3. Write an algorithm to convert T
temperature from Fahrenheit to F
Celsius and then represent it using
pseudocode.
Figure 8.7: Control structures
Questions
Sequence control structure in
1. Did you face any challenges flowcharts
relating the rules to the formulars, The computer reads instructions from
operations, and processes? How did a program file line by line sequentially,
you manage to interpret the rules starting from the first line. Examples
of an algorithm? from real life include adding numbers
2. Which task among the three in or any action with a series of steps
Activity 8.5 is most challenging? before termination. Consider your dress
Explain the challenges you faced before leaving for school. There are
compared to others and how you approximately four phases that make
solved them. up a sequence structure: putting on
underwear, putting on trousers or skirt,
putting on socks, and putting on a pair
Control structures in flowcharts
and pseudocode of shoes.
Control structures are essential components The following example illustrates the
in programming that dictate how an flowchart using a sequential control
execution of a program flows. They assist structure for an algorithm to add two
programmers in controlling the order in numbers, as shown in Figure 8.8.
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Student’s Book Form One
