Question

Exercise 2 - Summation Write a program to accept integer inputs until the user inputs a non-integer. Then, the program prints the summation of the inputted numbers. Hint: Use the function input() to get the user input. Use a variable total for calculating the summation. Need to use while loop for the repeated inputs. Use if statement with isdigit() function to check whether the user input is an integer or not. if (n.isdigit() == False): break If the user input is an integer, use the function int() to convert the user input to an integer and add it to the variable total. a = int(n) If the user input is not an integer, use the break statement to exit the loop immediately. The following is the sample output of the program: Input an integer: 5 Input an integer: 10 Input an integer: 2 Input an integer: x total = 17

Please use python to write the simple program.

Answer 1

Dear Student ,

As per requirement submitted above kindly find below solution.

Here new python program with name "summation.py" is created which contains below code.

summation.py :

#declaring variable to store summation
total=0
#using while loop
while True:
#asking user integer
n=input("Input an integer : ")
#checking integer
if(n.isdigit()==False):
#if not an integer then break the loop
break
else:
#add n into the total
total=total+int(n)
#print total
print("total=",total)

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Screen for indentation :

summation.py - E:/Python Programs/summation.py (3.8.0) File Edit Format Run Options Window Help #declaring variable to store summation total=0 #using while loop while True: #asking user integer n=input("Input an integer : ") #checking integer if(n.isdigit() ==False): #if not an integer then break the loop break else: #add n into the total total=total+int (n) #print total print("total=", total)

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Output :Compile and run summation.py to get the screen as shown below

Screen 1:summation.py

le Python 3.8.0 Shell - O X File Edit Shell Debug Options Window Help Python 3.8.0 (tags/v3.8.0:fa919fd, Oct 14 2019, 19:21:23) [MSC v.1916 32 bit (In tel)] on win32 Type "help", "copyright", "credits" or "license ()" for more information. > >> === RESTART: E:/Python Programs/summation.py == Input an integer : 5 Input an integer : 10 Input an integer : 2 Input an integer : x total= 17 >>>

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