genreal infomation about Algorithms and Flowcharts

1. Subject:-
Algorithms
and
Flowcharts
SHREE SWAMI ATMANAND SARASWATI
INSTITUTE OF TECHNOLOGY
Civil-2
1
Prepared by,
Lalji Shiyani
students of ssasit

2. INDEX2

3. Basic of algorithms
Define and use the three constructs for developing
algorithms: sequence, decision, and repetition.
Understand and use three tools to represent algorithms:
flowchart, pseudocode, and structure chart.
Understand the concept of modularity and subalgorithms.
List and comprehend common algorithms.
Understand the concept of an algorithm.
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4. Informal definition of an algorithm
used in a computer
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5. Finding the largest integer
among five integers5

6. Defining actions in Find Largest algorithm
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7. Advantages of algorithms
it eases identification and removal of logical errors
in a program.
It facilitates algorithm analysis to find out the most
efficient solution to a given problem.
It ensures easy comprehension of a problem
solution as compared an equivalent
computer program.
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8. Disadvantages of algorithms
In large algorithms, the flow of program
control becomes difficult to track.
Algorithms lack visual representation of
programming constructs like flowcharts; thus,
understanding the logic becomes relatively
Difficult.
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9. Flowcharts
A graphical represention of analgorithm,often
used in the design phase of programming to work
out the logical flow of a program.
Visual way to represent the information flow
Make our logic more clear
Help during writing of program
Make testing and debugging easy
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10. Symbol Name Uses
Start and stop symbol Used to start flw chart as
wel as to to terminate the
flow chart.
Input/output Used for ID operation
Process Usedto mention ALU and
data transfer task(i.e.
arithmetic or assignment
task)
start
stop
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11. Symbol Name Uses
decidsion For branching condition
Flow lines Indicates flow
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12. Flowcharts for three constructs12

13. Example Write an algorithm and draw a flowchart
that will read the two sides of a rectangle
and calculate its area.
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14. Example START
INPUT
W,L
A=L*W
INPUT
W,L
START
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15. Flow chart’s limitation
For very large program, flow chart goes
for many pages
Costly to draw flow charts for large
program
Difficult to modify
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