Answer:
Step 1: Start.
Step 2 :Read the three number suppose "a","b","c" form the user.
Step 3: Declared a variable "sum" and "Avg".
Step 4 : sum=a+b+c;
Step 5: Avg=sum/3.
Step 6:Display "sum " and "Avg".
Step 7 :End .
A flow chart is but a pictorial representation of an algorithm and is meant to depict the flow of control in a program.
The first step is to decide on an algorithm and maybe write it in the form of a pseudo code, an informal way of writing statements of a program without bothering about details of syntax.
Algorithms for the given problem:
[I]
Initialize Counter=0, Sum=0
Input integer
Add integer to Sum
Increment Counter
If Counter > 3, divide Sum by 3, Output result, stop
Else go to 2
[II]
Input Integer1, Integer2, Integer3
Average= ( Integer1+ Integer2+Integer3)/3
Output average
The second algorithm would be clumsy to find the average of a large number of inputs.
The first one can be easily generalised to handle n inputs, by introducing step 0 and modifying step 5
0. Input n
5. If Counter > n , divide Sum by n, Output result, stop
Note : There can be more ways of writing an algorithm for the problem by invoking loop control statements.
