CREATE OWN LIBRARY

Here, the program is written to find the sum of ‘n’ natural numbers. Natural numbers are the positive integers. The numbers are taken as input. While taking input, the number is checked whether it is a positive integer or not, if not then another positive number is taken as input. Then using a ‘for’ loop the numbers are added.

For example, if the number of elements is 2 and the given inputs are: 1, 2.

Then the sum will be: 1+2=3

INPUT: The number of elements and the numbers to be added

OUTPUT: Sum of the given numbers

PROCESS:

Step 1: [Taking the input]

               Read n [number of elements]

               For i=0 to n-1 repeat

                              Read arr[i]

                              If arr[i]≤0 then

                                             Print “Enter a positive integer”

                                             Set i<-i-1

                              [End of ‘if’]

               [End of ‘for’ loop]

Step 2: [Adding the numbers]

               Set sum<-0

            For i=0 to n-1 repeat

                              Set sum<-sum+arr[i]

               [End of ‘for’ loop]

               Print "The sum of the numbers: sum"

Step 3: Stop.