Question

Write a program that will add up the series of numbers: 99, 98, 97… 3, 2, 1. The program should print the running total as well as the total at the end. The program should use one for loop, the range() function and one print() command.

Answer 1

Answer:

isum = 0

for i in range(99,0,-1):

   isum = isum + i

print(isum)

Explanation:

This line initializes isum to 0

isum = 0

The following iteration starts from 99 and ends at 1

for i in range(99,0,-1):

This line adds the series

   isum = isum + i

This line prints the sum of the series

print(isum)

Answer 2

The program that will add up the series of numbers: 99, 98, 97… 3, 2, 1 is represented as follows using for loop, the range() function and one print() function.

sum = 0

for i in range(1, 100):

   sum += i

print(sum)

The code is written in python.

The variable sum is initialise to zero.

For loop is used to loop through the range of number 1 to 100(excluding 100).

Then the numbers are added to the sum initialised to zero.

The total sum is then printed.

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