我在Python的计算器程序中得到了错误的输出 [英] I am getting wrong output in my calculator program in Python

问题描述

嘿，我做了一个基本的计算器程序，但我得不到正确的输出，这是我的代码

hey i made a basic calculator program but i am not getting correct output from it this is my code

def add(first,second):
    return  first+second

def multiply(first,second):
    return  first*second

def subtract(first,second):
    return  first-second

def divide(first,second):
    return  first/second

print("1.division")
print('2.multiplication')
print('3.subraction')
print('4.addition')

user_input = input('enter your choice:')
first_num = float(input('enter first number:'))
second_num = float(input('enter another number:'))

if user_input==1:
    print(divide(first_num,second_num))

elif user_input==2:
    print(multiply(first_num,second_num))

elif user_input==3:
    print(subtract(first_num,second_num))
else:
    print(add(first_num,second_num))

我得到的输出是这样的



1.division

2.multiplication

3 .subraction

4.addition

输入您的选择：2

输入第一个数字：8

输入另一个数字：5

13.0

有人可以帮忙吗？



我尝试了什么：



我尝试使用不同的数字

the output i am getting is like this

1.division
2.multiplication
3.subraction
4.addition
enter your choice:2
enter first number:8
enter another number:5
13.0
Can Someone help please?

What I have tried:

I tried using different numbers

推荐答案

您的输入选择不是数字，而是串。因此，它将直接转到else语句。 （另外）



希望这有帮助。

Your input choice is not a number, but a string. It will therefore directly go to the else statement. (addition)

Hope this helps.

将您的代码更改为：

Change your code to:

if user_input==1:
    print(divide(first_num,second_num))

elif user_input==2:
    print(multiply(first_num,second_num))

elif user_input==3:
    print(subtract(first_num,second_num))

elif user_input==4:
    print(add(first_num,second_num))

else:
    print(add('Error: wrong choice'))

这样，你没有得到错误的结果，你被告知用户选择不是认识。

This way, you don't get wrong result, you are told that the user choice was not recognized.

引用：

我尝试使用不同的数字

As对于代码中的问题，解决方案1给出了原因。
所有输入都是a字符串，所以你需要转换为整数或与字符串比较。

As for the problem in code, solution 1 give you the reason.
All input is a string, so you need to convert to integer or compare with string.

这篇关于我在Python的计算器程序中得到了错误的输出的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！