作业13：四则运算升级

Posted 2021-09-22 noob

 一、代码 
  1 import random
  2 from fractions import Fraction
  3 def zs():
  4 
  5     fz= [\'＋\', \'－\', \'×\', \'÷\']#随机选择运算法则
  6 
  7     f= random.randint(0, 3)
  8 
  9     n1 = random.randint(0,99)
 10 
 11     n2 = random.randint(0,99)
 12 
 13     result = 0
 14 
 15     if f== 0:#加法
 16 
 17        result  = n1 + n2
 18 
 19     elif f == 1:#减法，要先比较大小，防止输出负数
 20 
 21         n1, n2 = max(n1, n2), min(n1, n2)
 22 
 23         result  = n1 - n2
 24 
 25     elif f== 2:#乘法
 26 
 27         result  = n1 * n2
 28 
 29     elif f == 3:#除法
 30         n2 = random.randint(1,99)
 31 
 32         result  = n1 / n2
 33 
 34     print(n1, fz[f], n2, \'= \', end=\'\')
 35 
 36     return result
 37 def xs():
 38 
 39     fz= [\'＋\', \'－\', \'×\', \'÷\']
 40 
 41     f= random.randint(0, 3)
 42 
 43     x1 = random.randint(0,20)#生成2个真分数，约分通分较复杂所以数值设的较小
 44     if x1==0:
 45         x2 = random.randint(1,20)
 46     else:
 47         x2 = random.randint(x1,20)
 48     x3 = random.randint(0,20)
 49     if x3==0:
 50         x4 = random.randint(1,20)
 51     else:
 52         x4 = random.randint(x3,20)
 53     n1 = Fraction(x1,x2)
 54     n2 = Fraction(x3,x4)
 55     result = 0
 56 
 57     if f== 0:#加法
 58 
 59        result  = n1 + n2
 60 
 61     elif f == 1:#减法，要先比较大小，防止输出负数
 62 
 63         n1, n2 = max(n1, n2), min(n1, n2)
 64 
 65         result  = n1 - n2
 66 
 67     elif f== 2:#乘法
 68 
 69         result  = n1 * n2
 70 
 71     elif f == 3:#除法
 72 
 73         result  = n1 / n2
 74 
 75     print(n1, fz[f], n2, \'= \', end=\'\')
 76 
 77     return result
 78 def chuti():
 79     x= random.randint(1,2)
 80     if x==1:
 81         result=str(zs())
 82     elif x==2:
 83         result=str(xs())
 84     return result
 85     
 86 #制作题库
 87  
 88 def test():
 89     print(\'输入所需要的题目数量\')
 90  
 91     n=int(input())
 92  
 93     result =[]
 94  
 95     m=0
 96  
 97     while m<=(n-1):
 98  
 99         print(m+1,end=\'、\')
100         result .append(chuti())
101         print(\' \')
102         m=m+1
103  
104     m=0
105  
106     print(\'对应的答案：\')
107  
108     while m<=(n-1):
109  
110         print(m+1,\'、\',result [m])
111  
112         m=m+1
113  
114   
115  
116 print(\'选择想要的模式\')
117  
118 print(\'1、进行单道四则运算\')
119  
120 print(\'2、制作题库\')
121  
122 n=int(input())
123  
124 #当输入1时，进行单道四则运算
125  
126 if n==1:
127  
128     while True:
129         x= random.randint(1,2)#随机选择整数或者分数的题型
130         if x==1:
131             result=str(zs())
132             y=input()
133             if y==result:
134                 print(\'答对了\')
135             else:
136                 print(\'答错了，正确答案是：\',result)
137         elif x==2:
138             result=str(xs())
139             y=input()
140             if y==result:
141                 print(\'答对了\')
142             else:
143                 print(\'答错了，正确答案是：\',result)
144 #当输入2时，进行制作题库
145  
146 if n==2:
147  
148      test()
149   

二、运行测试

 

 

三、性能分析