How to add on python [closed]

问题

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Closed 5 years ago.

I am trying to make a program where I can ask someone's age - then tell them that on their next birthday they will be x many years old.

for example:

python = "How old are you?"
answer = "17"

python = "On your next birthday you will be 18 years old".

that is the program which I am trying to make however I am stuck on how to add 1 to the age of the person

回答1:

How about this?

age += 1

or

age = age + 1

Make sure you are casting the user's input from a string to an integer.

回答2:

In order to increase age by one, you need it to be an integer. Try:

age = int(input("How old are you? ")
age += 1
print("On your next birthday you will be" + str(age) + "years old")

回答3:

age = input('How old are you?')
print('On your next birthday you will be' + str(int(age)+1) + 'years old.')

来源：https://stackoverflow.com/questions/22079657/how-to-add-on-python