I want to make easy program with loop but can't find out how. I am absolute beginner. So basicly program should add all numbers person writes to it. For example:
Person writes: 5
Program shows: 5
Person writes: 6
Program shows: 11
Person writes: 3
Program shows: 14
and so on. This is what I did and it's wrong I don't know how to write it right.
while True:
var1 = int(input("Write a number"))
var2 = 0 + var1
print(var2)
This is the code you are looking for, when the user insert a non digit input, i'm printing bad input and the user can try again.
good luck!
total = 0
while True:
try:
user_input = int(input("enter number"))
except ValueError:
print ("bad input, try again") # in case of the input is not a number
continue
total += int(user_input)
print (total)
userInput = None # this variable will handle input from user
numberSum = 0 # this is sum of all your numbers
print("Type 'exit' to quit")
while True:
userInput = input("Enter your number") # here you are taking numbers from user
if userInput == 'exit': # if user enters 'exit' instead of number, program will call break
break # break ends loop
numberSum += int(userInput) # this will add int(userInput) to your numberSum. int() function
# makes integer type from your String. You have to use it, because
# while getting input() from user, it's considered as string
print("Your sum is: ")
print(numberSum) # printing your sum
print("byebye...")
Note, if you type anything else than 'exit' or number, the program will exit with ValueError
You should initialize your sum holder (var1) outside the loop and in order to update the sum holder, you should add the newest input to it.
>>> var1 = 0
>>> while True:
... var1 += int( input('Write a number: ') )
... print(var1)
...
Write a number: 1
1
Write a number: 2
3
Write a number: 4
7
Write a number: -6
1
In your program each and every time you are updating var2 value with var1 value so the user input is printed
What you have to do is add the value var1 with var2 value .Initially var2 value is zero so it is equated to var1 and so on
var2=0
while True:
var1 = int(input("Write a number"))
var2 += var1
print(var2)
var2 = 0 + var1does, and why did you write that? When and why do you think it might be a good idea to setvar2to0? When and why do you think it might be a good idea to add something tovar2?