1. Flowchart Tutorial

2. Start or end of the program
Computational steps or processing function of a program
Input or output operation
Decision making and branching
Connector or joining of two parts of program

3. Draw a flowchart to find the sum of first 50 natural numbers.
Example 1:
Draw a flowchart to find the sum of first 50 natural numbers.

4. start
SUM=0
N=0
N=N+1
SUM=SUM+N no
IS N==50?
yes
Print SUM
END

5. Draw a flowchart to find the largest of three numbers A, B, and C.
Example 2
Draw a flowchart to find the largest of three numbers A, B, and C.

6. START
READ A,B,C
yes IS
B >C ? no
IS A>B ?
yes
IS A>C ?
yes no no
PRINT C
PRINT A
PRINT B
END

7. Example 3
Draw a flowchart for program Find the difference and the division of two numbers and display the result.

8. START
READ N1 , N2
D=N1-N2
V=N1/N2
PRINT D , V
STOP

9. Example 4
Draw a flowchart for program Print the first 10 natural number

10. start
N=1
Print N
N=N+1
yes
while
N <= 10 no
END

11. Example 6
Draw a flowchart for program Calculate the student grade ( A,B,C,D,F)

12. start Read Grade Grade >=90 yes no Grade >=80 yes no
Print A
yes no
Grade >=80
Print B
yes no
Grade >=70
yes
Print C no
Grade >=60
yes
Print D no
Print F
END

13. Example 7
Draw a flowchart for program read temperature , If temp > 0 print above freezing else below freezing

14. start Read Temp yes Temp >0 no End Print“above freezing”
Print“below freezing”
End

15. Example 8
Draw a flowchart for program read (10) marks for (20) students, then print the average for each student.

16. While studentCount <20 no
START
studentCount=0
markCount=0
sUM=0 , avg=0
While studentCount <20 no
yes
STOP
While markCount<10 no
avg=sUM/10
yes
PRINT avg
READ x
Increment studentCount
sUM=sUM+x
Increment markCount
avg=0 , sUM=0 markCount=0