Page 364 - Ai_417_V3.0_C9_Flipbook
P. 364
Step 2 N=2
Step 3 If N <= 20 goto Step 4 else goto Step 7
Step 4 Display N
Step 5 N=N+2
Step 6 Goto Step 3
Step 7 Stop
Flowchart
A flowchart is a graphical representation of an algorithm. It makes use of symbols which are connected through
arrows to show the direction of flow of information. It has been proved scientifically that visuals have more
impact on the human brain as compared with text. So, flowcharts are preferred over algorithms for solving a
problem. The symbols are:
SYMBOL NAMES SYMBOLS PURPOSE
Oval Used to start and stop a flowchart.
Parallelogram Used to take input and display output.
Used to perform assignment, mathematical and
Rectangle
processing operations.
Used for decision-making in case of branching
Diamond
or looping.
Used to show the direction of flow of information
Arrow in any direction
in a flowchart.
Drawing a Flowchart
Let us make a flowchart for calculating the area of a circle.
START
INPUT RADIUS
AREA=3.14*RADIUS
*RADIUS
DISPLAY AREA
STOP
362 Touchpad Artificial Intelligence (Ver. 3.0)-IX

