This document discusses flowcharts and their use in programming. It begins by defining different flowchart symbols and their meanings. It then provides examples of flowcharts for sequential, selection, and iteration processes. The sequential example calculates simple interest. The selection example checks voter eligibility based on age. The iteration examples display the first five even numbers using counters. Throughout, it emphasizes flowcharts as a tool for visualizing the steps in an algorithm or software development lifecycle.

1. WELCOME TO
PRABINO’S CLASS
Class 9 Programming Tool
A step forward to Digital GBS: Er. Prabino

2. FLOWCHART
A Designing Tool of Software Development Lifecycle
A step forward to Digital GBS: Er. Prabino

3. Different Symbols and their logic
Shape Symbol Meaning
Oval Start / End
Parallelogram Input/ Output
Rectangle Process
Rhombus Decision/ Check
Connector Arrows Connector Direction of Flow
A step forward to Digital GBS: Er. Prabino

4. Example of A Flowchart (Sequential)
To calculate Simple Interest
STOP
Start
Input P,T,R
SI= P*T*R/100
DISPLAY SI
A step forward to Digital GBS: Er. Prabino

5. Example of A Flowchart (Sequential)
To calculate Simple Interest WITH ALGORITHM
STOP
Start
Input P,T,R
SI= P*T*R/100
DISPLAY SI
STEP1: START
STEP2: READ P,T,R
STEP3: CALCULATE SI= P*T*R/100
STEP4: DISPLAY SI
STEP5: STOP
A step forward to Digital GBS: Er. Prabino

6. Example of A Flowchart (Selection)
To check the eligibility for voting. (i.e. Age>18)
STOP
Start
Input age
(a)
No vote
Is
a>1
8?
Please
Vote
A step forward to Digital GBS: Er. Prabino

7. Example of A Flowchart (Selection)
To check the eligibility for voting. (i.e. Age>18) With
Algorithm
STOP
Start
Input age
(a)
No vote
Is
a>1
8?
Please
Vote
STEP1: START
STEP2: INPUT AGE (a)
STEP3: CHECK a > 18,
If yes goto “Please Vote”
If no goto, “No vote”
STEP4: STOP
A step forward to Digital GBS: Er. Prabino

8. Example of A Flowchart (Iteration)
To display first five even number i.e.2,4,6,8,10.
STOP
START
Display N
Is
N>10?
N=2
N=N+2
Yes
No
A step forward to Digital GBS: Er. Prabino

9. Example of A Flowchart (Iteration)
To display first five even number i.e.2,4,6,8,10.
STOP
START
Display N
Is
N>10?
N=2
N=N+2
Yes
No
STEP1: START
STEP2: SET N = 2
STEP3: DISPLAY N
STEP4: INCREASE N BY 2
STEP5: IS N > 10
IF YES GOTO TO STEP6
IF NO, REPEAT STEP 3
STEP6: STOP
A step forward to Digital GBS: Er. Prabino

10. Example of A Flowchart (Iteration)
To display first five even number i.e.2,4,6,8,10. with counter
STOP
START
Display N
Is C
>5?
N=2
C=1
N=N+2
C=C+1
Yes
No
A step forward to Digital GBS: Er. Prabino

11. Example of A Flowchart (Iteration)
To display first five even number i.e.2,4,6,8,10. with Algo and Counter
STOP
START
Display N
Is C
>5?
N=2
C=1
N=N+2
C=C+1
Yes
No
STEP1: START
STEP2: SET N = 2 & C=1
STEP3: DISPLAY N
STEP4: INCREASE N BY 2 and C by 1
STEP5: IS C > 5
IF YES GOTO TO STEP6
IF NO, REPEAT STEP 3
STEP6: STOP
A step forward to Digital GBS: Er. Prabino

12. THANKS EVERYONE
Class 9 Prepared by: Er. Prabino
A step forward to Digital GBS: Er. Prabino