Flowcharting Examples
1
Flowcharting Examples
Example 1: Draw a flowchart to convert the length in feet to
centimeter.
Solution:
START
Input Lft
Lcm = Lft x 30
STOP
Print Lcm
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Flowcharting Examples: Solutions to Various Problems, Exams of Engineering Drawing and Graphics
Flowchart solutions to various problems, including converting feet to centimeters, calculating rectangle areas, determining largest values, calculating 24, adding numbers, storing negative numbers, computing circle areas, identifying positive or negative numbers, finding quadratic equation roots, obtaining sine values, calculating factorials, adding even numbers, finding the largest number in a list, and entering student marks. Each problem is presented with a flowchart and, in some cases, a trace table.
Typology: Exams
2021/2022
1 / 18
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Flowcharting Examples
Example 1: Draw a flowchart to convert the length in feet to centimeter.
Solution:
START
Input Lft
Lcm = Lft x 30
STOP
Print Lcm
Example 2: Draw a flowchart to read the two sides of a rectangle and calculate its area.
Solution:
START
Input
W, L
A = L x W
STOP
A
Example 4: Write an algorithm and draw a flowchart to calculate
Flowchart:
This program can be generalized and solved using the loop as in the following example
START
Product = Base
STOP
Product = Product * Base
Product = Product * Base
Product = Product * Base
Base=
Print Product
Example 5: Write an algorithm and draw a flowchart to calculate 24 using a loop approach? Verify your result by a trace table.
Flowchart:
START
Product = Base Counter = 1
STOP
Y
is Counter < Power
Product = Product * Base
Counter = Counter + 1
N
Base = 2
Power = 4
Product
Example 4-1: Draw a flowchart to add two numbers entered by user.
Solution:
Start
Input the two numbers (e.g. A and B)
C = A + B
End
Display Summation (C)
Example 4-2: Draw a flowchart to read a variable num1 = 7 and store the negative value of num1 in another variable num2.
Solution:
Start
Data input (num1 = 7)
num2 = - num
End
Display num
Example 4-4: Draw a flowchart to read a number and identify either the number is positive or negative.
Solution:
Start
Read N
End
Is N< Yes No
Write “Negative number”
Write “Positive number”
Example 4-5: Draw a flowchart to find all the roots of a quadratic equation ax^2 +bx+c=0.
Solution:
Start
Input the variables a,b,c
Calculate the discriminant D=b^2 - 4a*c
End
Is D ≥ 0
root1=(-b+ √D )/(2a) root2=(-b- √D )/(2a)
real=(-b)/(2a) imag=( √ -D)/(2a)
root1=real+jimag root2=real-jimag
print root1, root
Example 4-7: Draw a flowchart to obtain to obtain the factorial of
Solution:
Start
Mul = Mul * Index
End
Is Index > 1?
Decrease Index by 1
Yes
No
Mul = 1 Index = 20
Display Mul
Example 4-8: Draw a flowchart to add even numbers from 0 to 20
Solution :
Start
End
Is Count>
Yes
No
Is Count even
Sum=Sum+Count
Count=Count+
No Yes
Sum=
Count=
Print Sum
Example 4-10: Draw a flowchart to enter the name of N students and three marks for each student and print the student name, average mark, and grade.
Mark Grade <= 85 Excellent <=75> 85 Very Good <=65> 75 Good <=50> 65 Pass
50 Fail
Solution:
Start Input N K= 1
Input Name, M1, M2, M
Average = (M1 + M2 + M3)/
Fail Average < 50
Pass Average < 65
Good Average < 75
Very Good Average < 85
Excellent Print Name, average, grade
K > N Stop
Yes
No Yes No Yes No Yes No
No Yes
K=K+