C Language : How to Write the Algorithm?


Algorithm has 3 sections :

Header : Algorithm Name.
Declaration : A description of variable and their types.
Algorithm body's : A Sequenc of algorithm steps.
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Halt

Example 1 : Algorithm for adding two numbers

  1. Start
  2. [ Obtain input values ]
    Read (A, B)
  3. [ Add numbers and store the result ]
    C <- A + B
  4. [ Print result ]
    Write (c)
  5. Stop

Example 2 : Algorithm for finding xn for given x and n

  1. Start
  2. [ Obtain input value ]
    Read (x, n)
  3. [ initialize result so far ]
    result -> x
  4. [ initialize loop counter ]
    i -> 1
  5. [ Print result ]
    repeat thru step 7 while i < n
  6. [ Recomputed result so far ]
    result <- result * x
  7. ( increment counter )
    i <- i + 1
  8. ( Display result )
    Write (x, n, result)
  9. ( finish )
  10. Halt

What are the Notations we will use to write an Algorithm?

Notations :
Beginning or Ending : Start, Stop
Input :Read( variable )
Example : Read( var1, var2 )
Output : Write ("Test to be displayed", variables)
Example : Write("Learning C", var1, var2)
Comment : [ Information ]
Operator :
&&, >, <, +, -, *, /, %, and, or, not
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