Programming flowcharts for C Language

1. Flowchart’s
Nitin Chandwani

2. • Flowchart are the graphical representation of
a solution to a particular problem, which
comes under the category of Programming
Practices and Techniques, in simple words
flowchart is a graphical representation of a
program.
• Flowchart are symbolic diagrams which shows
type of data(numeric, character etc.), data
flow, control flow and programming logics and
algorithms.

3. • The first flowchart was created by Von
Neumann in 1945.
• Flowchart are important for planning and
working of a program
• Flowcharts decreases our efforts i.e. they are
easy to understand and check logics and
algorithms.
• Flowcharts have became necessity as it is
important to do paper work i.e. making logic
and algorithm before creating a program on a
Machine.

4. Symbols of
Flowcharts

5. 1) Terminal Symbol :
This symbol shows the beginning or ending of a
program i.e. first and the last element of
flowchart.
It is single directional i.e. only one flow line can
be connected with terminal symbol.

6. 2. Input/output Symbol :
A parallelogram is used to represent input and
output operation, it can have 2 flow lines.
3. Process Symbol :
This symbol is used for showing
mathematical calculation, change in data or
any type of processing on data, it can have 2
flow lines.

7. 4. Flow Line :
A straight line between two symbols shows
the logical flow of control in a program is
flow line.
5. Decision Symbol :
Diamond symbol is used to show or apply
condition , it has single flow line for input and
two flow lines for output i.e. one for true part
and one for false part.

8. 6. Connector Symbol :
A
Connector symbol (circle) are used to connect
separate portions of flow chats, it can have
single flow line.

9. Steps for
Programming
Practices and
Techniques

10. Step 1 :
Requirement :
Input : Quality :
Quantity :
Process :
Output :
This step the data or information required by
program is written.
Step 2 :
Flowchart : It refers to creation of flowchart.

11. Step 3 :
Dry Run : Dry run is step by step execution
of flow chart that means checking and
removing errors from the flowchart if any, It
can also be defined as executing and giving
output(result) from the flowchart on paper.
Step 4 :
Source Code : It is the process of creating
program/code on a computer.

12. Step 5 :
Debugging : Debugging is a process of
removing errors from the program.
Step 6 :
Documentation : It is process of creating
documentation about the program i.e.
working of program, help etc.

13. Examples

14. Print message “Hello Everybody…”
using programming practices and
technique?
Required :
Input : Not Required
Quality :
Quantity :
Process : Not Required
Output : “Hello Everybody…”

15. Start
Display “Hello Everybody…”
End
Flowchart :
Dry Run :
Hello Everybody…

16. Input 2 numbers from user and print
their sum ?
Required :
Input :
Quality : 2
Quantity : Number
Process : a+b
output : Sum

17. Start
Var a, b, Sum
Input “Enter first number :” → a
Input “Enter first number :” → a
Sum ← a+b
Print “Sum is :”,Sum
End
Flowchart :

18. Dry Run :
a b Sum
100 45 145

19. Input a numbers from user and check
whether it is even or odd ?
Required :
Input :
Quality : Number
Quantity : 1
Process : Modulus number by 2
and compare it by 0.
Output : Even or Odd

20. Flowchart :
Start
Var num
Input “Enter a number :” → num
If
num%2==0
End
Print “Even”
Print “Odd”

21. Dry Run :
Enter a number :14
14%2=0 (true)
Even

22. Required :
Input : Not Required
Quality :
Quantity :
Process :
output :