Program to find the sum of n natural numbers

Program to find the sum of n natural numbers

Algorithm :::

  

    Step 1 : Start

    Step 2 : Assign sum=0 and i=0

    Step 3 : Read limit of number , n

    Step 4 : Repeat steps 5 to 6 until i=n reached

    Step 5 : Compute sum=sum+i

    Step 6 : Compute i=i+1

    Step 7 : Print sum

    Step 8 : Stop

  Flowchart :::

Program:::

  sum=0
  i=0
  n=input("Enter the number : ")
  while i<=n:
      sum=sum+i
      i=i+1
  print"Sum is ",sum

Output:::

Enter the number :  5
Sum is  15
 
Enter the number :  6
Sum is  21