How to write Algorithms

How to write Algorithms for solving problems?

Algorithm:

An algorithm is the set of rules that are needed to be followed while solving problems. Here we'll learn how to write algorithms for the given simple problems.

Tips for writing an algorithm :

• Read the problem carefully.
• Don't start writing the code immediately. It is always best to start with the algorithm.
• After understanding the problem, think about the logic required to solve the problem.
• Once you root out the logic behind the problem, then start writing the algorithm which is nothing but the procedures of solving the problem in a step wise manner.

Problem 1:

To check whether the given number is positive or negative.

Input: A number

Output: Positive or negative

Procedure:

Step 1 : Start

Step 2 : Read the number(n) from the user.

Step 3 : If the number is less than zero, print "negative".

If the number is greater than zero, print "positive".

Step 4 : End

Problem 2:

To check whether the given number is odd or even.

Input: A number

Output: Odd or Even

Procedure:

Step 1: Start

Step 2: Read the number (n) from the user

Step 3: Divide n by 2

                     1. If the remainder is zero, print  "Even"

                     2.Otherwise, print "Odd"

Step 4 : End 

Problem 3:

To find the Area of circle.

Input: Radius (r)

Output : Area (A)

Process:

Step 1 :Start

Step 2 :Get radius (r) from the user

Step 3 :Calculate Area, A=π*r*r

Step 4 :Print A

Step 5 :End

Problem 4:

To print how may minutes and seconds are present in the given seconds.

Input : Seconds (S)

Output: Minutes (min) & seconds (sec)

Process:

Step 1 :Start

Step 2 :Get seconds (S) from the user

Step 3 :Divide seconds by 60

Step 4 :Print quotient as min & remainder as sec

Step 5 :End

Problem 5:

To print number and it's square.

Input: A number

Output: Number and it's square

Process:

Step 1 :Start

Step 2 :Get number (n) from the user

Step 3 : Calculate Square , S=n*n

Step 4 :Print S

Step 5 : End

Problem 6 :

To compute (x+y)/(x-y) for two numbers x and y.

Input : Two numbers x and y

Output : C=(x+y)/(x-y)

Process:

Step 1 : Start

Step 2 :Get numbers x and y from the user

Step 3 :Calculate C=(x+y)/(x-y)

Step 4 :Print C

Step 5 :End

Problem 7:

To find n + nn + nnn for given number n

Input : A number n

Output : X=n+nn+nnn

Process:

Step 1 :Start

Step 2 :Get number n from the user

Step 3 :Calculate S= n + nn + nnn

Step 4 :Print S

Step 5 :End