It is a diagram that describes the logical arrangement of a program. The symbols used are as follows:

Symbol	Symbol Name	Description
	Terminal	as the beginning (contains ‘Start’) and as the end (contains ‘End’/‘Stop’).
	Input/Output	Reads input or displays output.
	Process/Processing	Processes data through arithmetic and logical operations.
	Decision/(decision box)	Functions to decide the direction/branch taken according to the fulfilled condition, namely True/False.
	Subroutine/subprogram	To execute the process of a part (subprogram) or procedure.
	On page Connector	to connect a disconnected flowchart where the part is still on the same page.
	Flowline/Data flow	The direction part of the executed instruction.
	Off page Connector	Connects a connection from a disconnected flowchart part where the connection is on another page.
	Preparation	Used for initial value assignment.

Computer Program Flowchart

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Basically a computer program generally consists of:

1. Reading / entering data into the computer
2. Performing computation/calculation on the data
3. Outputting / printing/ displaying the results.

Flowchart consists of three structures

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1. Sequence Structure / Simple Structure Used for programs whose instructions are sequential

Example of Sequence Structure Flowchart Calculating Triangle Area

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Using Storage Tables

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Table 1. Sequence Storage Media 1

Table 2. Sequence Storage Media 2

Summing Two Positive Numbers

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Create a flowchart to sum two positive integers and print the result. The algorithm:

• Enter number a
• Enter number b
• Sum numbers a and b
• Print the sum result

Determining Even/Odd Numbers

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Branching Structure Used for programs that use condition selection. (example determining even/odd numbers)

The algorithm:

1. Enter a number
2. Divide the number by 2
3. If the remainder of the division = 0 then the number is an even number
4. If the remainder of the division = 1 then the number is an odd number

Pseudocode:

read number
If number mod 2 = 0 then
“Even Number”
Else
“Odd Number”

Looping Flowchart

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Looping Structure Used for programs whose instructions will be executed repeatedly.