将所有数字相加（在while循环中）

Question

所以我正在练习python编码。我的问题是“因此，我制作了一个程序，将用户输入的所有数字相加，但是程序的输出不是用户输入的所有数字的总和。

Answer 1

第一个sum_num需要一个初始值

sum_num = 0

，并且每次都需要在循环中更改sum_num：

sum_num = sum_num + num

所有基于您的代码：

    i = 0
    sum_num = 0
    while 1 == 1:
        num = int(input('enter a number :'))
        sum_num = sum_num + num
        i = i + 1
        if i > 5:
            print('Total number is :' + str(sum_num))
            break

如果有帮助，请接受。

Answer 2

您可以通过其他代码完成相同的工作 如果您要计算用户要输入的数字，则可以使用以下代码：

#create a variable that store the total value
sum_num = 0

#for loop take a the number in range to repeat the code by it
for i in range(5):

    #take the number from user and store it
    num = int(input("Enter a number: "))

    #add the number to total variable
    sum_num += num

#at the end of the loop print the total
print("Total Number Is " + str(sum_num)) 

如果您没有数量，用户将输入“使用这种方式”：

#create a variable that store the total value
sum_num = 0

#create flag that tell me if user won't enter any other numbers or he want to
#enter more numbers
flag = True

#while loop take a flag and will be in the loop while flag is true
while(flag):

    #take the number from user and store it
    num = int(input("Enter a number: "))

    #add the number to total variable
    sum_num += num

    #ask user if he want to continue
    ask = input("Do you want to continue : ")
    if(ask.lower() == 'no' or ask.lower() == 'n') :
    flag = False

#at the end of the loop print the total
print("Total Number Is " + str(sum_num))