4 Process Control 4.5 compare for loop and while loop

4.5.2 calculates the sum of the numbers entered by the user

The following program lets the user enter some numbers and then prints out the sum of those numbers.

① This is the version that uses the For loop:

# forsum.py
n = Int (input (' How many numbers to sum? '))
Total = 0
For I in range (n):
s = input (' Enter number ' + str (i + 1) + ': ')
Total = total + int (s)
Print (' The sum is ' + str (total))

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② This is the version that uses the while loop

# whilesum.py
n = Int (input (' How many numbers to sum? '))
Total = 0
i = 1
While I <= N:
s = input (' Enter number ' + str (i) + ': ')
Total = total + int (s)
i = i + 1
Print (' The sum is ' + str (total))

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Similarly, the while loop version is more complex than the for loop version.

This article is from the "Advanced Technology" blog, so be sure to keep this source http://vipnoon.blog.51cto.com/7589908/1766609

4 Process Control 4.5 compare for loop and while loop