每次用户答对问题时，如何提高分数？

Question

我正在制作一个非常简单的数学问答游戏，每次用户答对问题时，我都想提高分数。 但是当我运行代码时，分数保持在 1 并且没有增加。

import random
for x in range (0,10):
   num_1 = random.randint(1,10)
   num_2 = random.randint(1,10)
   ansstring = "What is {0} + {1}:".format(num_1,num_2)
   answer = int(input(ansstring))
   score = 0
if answer == (num_1 + num_2):
   print("CORRECT!")
   score = score + 1
   print ("Score:",score)
else:
   print("INCORRECT! Correct answer is", (num_1 + num_2))
   
print ("Your score was", score,"/10")

Answer 1

您需要将所有游戏内容放在for loop中，并将变量score放在for循环之外。

原因是每次for loop迭代时，您都在重置变量。

出于同样的原因，您需要检查每个总和，因此您需要将if语句放在for loop中。

代码：

import random
score = 0
for x in range (0,10):
    num_1 = random.randint(1,10)
    num_2 = random.randint(1,10)
    ansstring = "What is {0} + {1}:".format(num_1,num_2) + " "
    answer = int(input(ansstring))
    if answer == (num_1 + num_2):
        print("CORRECT!")
        score = score + 1
        print ("Score:",score)
    else:
        print("INCORRECT! Correct answer is", (num_1 + num_2))
 
print ("Your score was", score,"/10")

希望这可以帮助！

Answer 2

将变量score放在循环之外，因此不会在每次迭代时将其初始化回0 。

获取for-loop内的if-else条件以检查每次迭代的当前分数：

import random
score = 0  # score var should be outside the loop
for x in range (0,10):
   num_1 = random.randint(1,10)
   num_2 = random.randint(1,10)
   ansstring = "What is {0} + {1}:".format(num_1,num_2)
   answer = int(input(ansstring))
   if answer == (num_1 + num_2):
       print("CORRECT!")
       score = score + 1
       print ("Score:", score)
   else:
      print("INCORRECT! Correct answer is", (num_1 + num_2))
   
print ("Your score was", score,"/10")

Answer 3

很简单，从 for 循环中取出score ：

import random
score = 0
for x in range (0,10):
   num_1 = random.randint(1,10)
   num_2 = random.randint(1,10)
   ansstring = "What is {0} + {1}:".format(num_1,num_2)
   answer = int(input(ansstring))

   if answer == (num_1 + num_2):
      print("CORRECT!")
      score += 1
      print ("Score:",score)
   else:
      print("INCORRECT! Correct answer is", (num_1 + num_2))
       
print ("Your score was", score,"/10")

您的不起作用的原因是，在每次迭代期间，您一遍又一遍地设置score = 0 。

Answer 4

你必须改变的事情：

1. 分数必须在for loop之外，因为您每次都给它赋值 0。
2. 当答案正确时，您必须增加分数。
3. 您的 if-else 语句必须在for loop内

以下是代码的外观：

import random

score = 0
for x in range (0,10):
   num_1 = random.randint(1,10)
   num_2 = random.randint(1,10)
   ansstring = "What is {0} + {1}:".format(num_1,num_2)
   answer = int(input(ansstring))
   if answer == (num_1 + num_2):
       print("CORRECT!")
       score = score + 1
       print ("Score:",score)

   else:
        print("INCORRECT! Correct answer is", (num_1 + num_2))