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+--- Thread: John Guttag Python Book Finger Exercise 5 (/thread-8714.html)
John Guttag Python Book Finger Exercise 5 - pritesh - Mar-04-2018
Hi,
Here's my way of taking a crack at the 5th Finger exercise in the John Guttag book - "Introduction to Computation and Programming Using Python with Application to Understanding Data"
Write a program that asks the user to enter an integer and prints two integers, root and pwr, such that 0 < pwr < 6 and root ** pwr is equal to the integer entered by the user. If no such pair of integers exist, it should print a message to that effect.
Note:- I had to add the weird condition "x ** 1 !=x" because at the end the exercise states "If no such pair of integers exist, it should print a message to that effect." Which I think is the author's way of saying " If none of the root and pwr combinations equal to the number you input, print a message accordingly".
Well, any number, if raised to 1 will be equal to itself, so I put the else statement at the end.
#Write a program that asks the user to enter an integer and prints two integers,
#root and pwr, such that 0 < pwr < 6 and root ** pwr is equal to the integer entered
# by the user. If no such pair of integers exist, it should print a message to that effect.
x = int(input("Enter an integer: "))
pwr = 1
while pwr < 6 :
if x < 0:
root = x
else:
root = 0
while root ** pwr <= x:
if root ** pwr == x:
print(root, " ** ", pwr, "=", x)
else:
if x ** 1 != x:
print(x, "No such integer pair exists.")
root += 1
pwr += 1And here are some output examples:C:\Users\prite>python rootpwr.py Enter an integer: 64 64 ** 1 = 64 8 ** 2 = 64 4 ** 3 = 64 C:\Users\prite>python rootpwr.py Enter an integer: -729 -729 ** 1 = -729 -9 ** 3 = -729 C:\Users\prite>python rootpwr.py Enter an integer: 729 729 ** 1 = 729 27 ** 2 = 729 9 ** 3 = 729