an algorithm to find the factorial of a number

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What is algorithm

  • An algorithm is step by step description of the method to solve a problem.
  • It is an effective procedure for solving a problem in a finite number of steps an algorithm to find the factorial of a number

How to start writing algorithm : Step by Step solve the problem

  • Problem Description – Find description of the problem.
  • Problem Analysis – Analyze the problem.
  • Start writing steps to resolve the problem in your language.
  • Re-analyze the steps and try to add more details.
  • Final Review

An algorithm to find the factorial of a number

Step 1: Start
Step 2: Declare variables n,factorial and i.
Step 3: Initialize variables
 factorial←1
 i←1
Step 4: Read value of n
Step 5: Repeat the steps until i=n
 5.1: factorial←factorial*i
 5.2: i←i+1
Step 6: Display factorial
Step 7: Stop

 

 

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