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Flowchart. Flowchart:. It is a diagram consists of symbolic block that represents the algorithm step by step Symbols of flowchart: Terminal (start, stop) Input / output Processing Flow: concerned with direction Decision: for logic comparison Connector Off-page connector. start.

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Flowchart1
Flowchart:

It is a diagram consists of symbolic block that represents the algorithm step by step

Symbols of flowchart:

  • Terminal (start, stop)

  • Input / output

  • Processing

  • Flow: concerned with direction

  • Decision: for logic comparison

  • Connector

  • Off-page connector


Flowchart2

start

Read name, mark

New_mark = mark+5

  • print name, new_mark

stop

Flowchart:

Ex: draw the flowchart for this algorithm:

  • Begin

  • startstopRead name, markprint name, new_markNew_mark = mark+5

  • input name, mark

  • new_mark = mark+5

  • print name, new_mark

  • End


Flowchart3

start

studentcount =1

A

studentcount <= 10

stop

Read name, mark

new_mark = mark + 5

print name, new_mark

studentcount = studentcount +1

A

Flowchart:

Ex: draw the flowchart for this algorithm:

  • Begin

  • studentcount =1

  • if studentcount > 10 then Stop

    else

    • read name, mark

    • calculate new_mark = mark + 5

    • print name, new_mark

    • studentcount = studentcount +1

    • goto step 3


Flowchart4

start

Read x, y, L

yes

L< 0

x2 –y + x

No

yes

L=0

2x + y

No

(x / y) + 10

Write F

stop

Flowchart:

Ex:

Draw a flowchart to compute:

F = x2 –y + x L<0

2x + y L=0

(x / y) + 10 L>0

  • start

  • read x, y, L

  • if (L<0) then

    F = x2 –y + x

    else

    if (L=0) then

    F = 2x + y

    else

    F = (x / y) + 10

  • write F

  • stop


Flowchart5

A

start

yes

No

Read n

Read n

I<=n

yes

Read x

Max<x

Max = x

stop

No

Max=x

Min=x

yes

Min>x

Min = x

No

I = 2

I = I +1

b

A

b

Flowchart:

Ex:

Trace the following flowchart to find the value of max and min variable for 4 numbers order as follows (x = 4, 2, 1, 3)?


Flowchart6
Flowchart:

Ex:

Read name for student, when name="xxx" stop the program, if name does not equal "xxx" then compute the grade of every student. Every student has five courses. The average for the student courses has to be computed and there by the grade is given.

Avg > = 90 ------------------------> grade = 'A'

80 < =Avg < 90 ------------------------> grade = 'B'

70 < =Avg < 80 ------------------------> grade = 'C'

60 < =Avg < 70 ------------------------> grade = 'D'

Avg < 60 ------------------------> grade = 'F'


Sol:

  • Start

  • read name

  • while (name != "xxx") do

    • begin

    • total = 0

    • for count = 0 to 5 do

      • begin

      • read mark

      • total = total + mark

      • end

    • avg = total / 5

    • if ( avg >= 90) then

      grade = 'A'

      else

      if ((avg >=80) and (avg < 90)) then

      grade = 'B'

      else

      if ((avg >=70) and (avg < 80)) then

      grade = 'C'

      else

      if ((avg >=60) and (avg < 70)) then

      grade = 'D'

      else

      Grade = 'F'

    • Write name, grade

    • read name

    • end

  • stop


A

start

C

yes

total= 0

Count= 0

avg > = 90

Grade='A'

Read name

No

B

((avg >=80) and (avg < 90))

yes

Grade='B'

Name = "xxx"

yes

No

Read mark

stop

No

total= total + mark

((avg >=70) and (avg < 80)

yes

Grade='C'

count= count + 1

yes

No

count < 5

No

B

avg = total / 5

((avg >=60) and (avg < 70))

yes

Grade='D'

A

No

Grade='F'

Write name, grade

C


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