Question

python

la ab X, X Lab 7 Design and implement a Python program that uses a while loop and selection statements to print the sum of the even numbers and the sum of the odd numbers (all integers) read from the keyboard. The sequence of numbers ends with a negative number: So, all numbers considered for printing the two sums are greater than or equal to 0. The sequence may be empty. Here is a possible interaction. Enter an integer: 3 Enter an integer: 6 Enter an integer: 2 Enter an integer: 8 Enter an integer: 9 Enter an integer: 0 Enter an integer: -1 Sum of even integers 16 Sum of odd integers 12 Address the major issues: 1. Come up with at least 6 inputs that properly test the program. Fill out the following table. At a minimum, come up with a case for each of the following: a) Multiple odd numbers and no even numbers, b) Multiple even numbers and no odd numbers, c) a single odd number and no even numbers, d) a single even number and no odd numbers, c) multiple even and odd numbers 1) No numbers Test Input sequence Page 1 of 2 Expected Output 365 words

Answer 1

Main parts of the code are commented with the explanation.

#variables for storing sum of odd numbers and even numbers
sodd = 0
seven = 0


#variable for getting user input(input integer)
#NOTE: input taken will be in string format, so convert it into int using as shown below
number = int(input())

#loop until number(user input) is -1
while(number != -1):

#check the remainder of number when divided by 2. If 0 then it is even so add it the existing even sum
    if (number%2 == 0):
        seven += number

#else add it to existing odd sum
    else:
        sodd += number

#NOTE: % gives remainde, // gives quotient, / gives actual value of division
        

# get the next integer from user via input 
    number = int(input())


#if -1 is entered as input while loop breaks. So, print the output
    

#format method of python formats output message such that respective '{}' position will be replaced with value of the parameter passed to format method. 
print("Sum of even integers:{}".format(seven))
print("Sum of odd integers:{}".format(sodd))

Code and Output SS

1 sodd = 0 2 seven = 0 3 3 number = int(input()) 4 - while(number != -1): 5 if (number%2 == 0): 5 seven += number 7 else: 3 sodd += number 1 number = int(input()) print("Sum of even integers:{}".format(seven)) 3 print("Sum of odd integers:{}".format(sodd)) 1

3 6 2 8 0 9 -1 Sum of even integers:16 Sum of odd integers:12