Write a program using Python that prompts for an integer—let’s call it X—and the

Question

Write a program using Python that prompts for an integer—let’s call it X—and then nds the sum of X consecutive integers starting at 1. That is, if X = 5, you will nd the sum of 1 + 2 + 3 + 4 + 5 = 15

Modify your program by enclosing your loop in another loop so that you can nd consecutive sums. For example, if 5 is entered, you will nd ve sums of consecutive numbers:

1   = 1

1+2 = 3

1+2+3 = 6

1+2+3+4 = 10

1+2+3+4+5 = 15

                             Print only each sum, not the arithmetic expression.

Explanation / Answer

ANSWER:

num = int(input("Enter a number: "))
if num < 0:
print("Enter a positive number")
else:
sum = 0
i=1
j=0
# use while loop to iterate un till zero
while(i <= num):
    j=i
    while(j > 0):
    sum= sum+j
    j=j-1
    print ('The sum = ',sum)
    i=i+1
    sum=0
      

OUTPUT:

Enter a number: 5

('The sum = ', 1)
('The sum = ', 3)
('The sum = ', 6)
('The sum = ', 10)
('The sum = ', 15)

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