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Step 6: Print the sum.
Step 7: Subtract the number B from the number A.
Step 8: Print the difference.
Step 9: Stop.
B. Algorithm to find the smallest in two numbers A and B.
Step 1: Start.
Step 2: Read two numbers and store them in A and B.
Step 3: Compare number A and B. If A is less than B, print "A is smallest" and go to Step 5.
Step 4: Compare number A and B. If B is less than A, print "B is smallest" and go to Step 5.
Step 5: Stop.
DEFINING FLOWCHARTS
A flowchart is a type of graphical diagram that represents an algorithm. It is a set of instructions that
can be followed to perform a specific task, workflow or process. This diagrammatic representation
illustrates a solution model to a given problem. Flowcharts are used in analysing, designing,
documenting or managing a process or program in various fields.
Flowcharts show the sequence of instructions in a single program. They play a vital role in the
field of programming. These are helpful in understanding the logic of complicated and lengthy
problems. Once a flowchart is drawn, it becomes easy to write the program in any high-level
language. Often we see that flowcharts are helpful in explaining the program to others. Hence, it
is correct to say that a flowchart is must for the better understanding of a complex program.
Symbols used in Flowcharts
Different symbols are used to draw different types of flowcharts. Let us discuss them.
Symbol Name Description
It is used to show the start and stop points of the flowchart. It
(Start/Stop)
usually contains the words 'Start' or 'Stop'.
It shows a process or action step. This is the most common
Process
symbol used in flowcharts.
It indicates a question or branch in the process flow. It is used
Decision
when there are two options (Yes/No).
It represents material or information entering or leaving the
Input/Output
system, i.e., input and output.
Algorithm and Flowchart 89

