Question

[27] Write a recursive function to calculate the following for a given input value for x. result = 1+ 2+ 3 ..... + x For example: if the input for x is 5, the result will be 1+2+3+4+5 = 15 if the input for x is 8, the result will be 1+2+3+4+5+6+7+8 = 36 Write recursive function.

(for python)

Answer 1

The code in python is given below.

def serialAdd(x):
if x<=1:
return x
else:
return(x+serialAdd(x-1))

n=int(input("Please Enter a Number: "))
print("The result is:",serialAdd(n))



The screenshot of the running code is given below.


1 - def serialAdd(x): 2 if x<=1: 3 return x 4 - else: 5 return(x+serialAdd(x-1)) 6 7 n=int(input("Please Enter a Number: ")) 8 print("The result is:", serialAdd(n)) 9





Output for n=5 then result is 15
n=10 then result is 55





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