自动生成四则运算题目程序（计算机181陈硕）

| 博客班级 | 软件工程 |
| ---- | ---- | ---- |
| 作业要求 | 作业链接 |
| 作业目标 | 培养编程能力和学会用markdown |
| 学号 | 3180701122 |

需求分析：
1.能自动生成四则运算题目
2.除了整数外，还要支持真分数的四则运算
3.判断运算结果对错

import random
from fractions import Fraction

def newint() 生成整数四则运算

def newint():
opr = ['＋', '－', '×', '÷']
#以下fh取符号，n1、n2取随机整数
fh = random.randint(0, 3)
n1 = random.randint(1, 20)
n2 = random.randint(1, 20)
rjg = 0
if fh == 0:
rjg = n1 + n2
elif fh == 1:
#防止出现负数，则取大的在前，小的在后
n1, n2 = max(n1, n2), min(n1, n2)
rjg = n1 - n2
elif fh == 2:
rjg = n1 * n2
elif fh == 3:
n1, n2 = max(n1, n2), min(n1, n2)
#除法缩小难度，不考虑余数
while n1 % n2 != 0:
n1 = random.randint(1, 10)
n2 = random.randint(1, 10)
n1, n2 = max(n1, n2), min(n1, n2)
rjg = int(n1 / n2)
#输出题目，返回答案
print(n1, opr[fh], n2, '= ', end='')
return rjg

def newfra() 生成真分数四则运算

def newfra():
opr = ['＋', '－', '×', '÷']
#创造n1、n2为随机分数
fh = random.randint(0, 3)
t1 = random.randint(1, 10)
t2 = random.randint(t1, 10)
n1 = Fraction(t1, t2)
t1 = random.randint(1, 10)
t2 = random.randint(t1, 10)
n2 = Fraction(t1, t2)
rjg = 0
if fh == 0:
rjg = n1 + n2
elif fh == 1:
n1, n2 = max(n1, n2), min(n1, n2)
rjg = n1 - n2
elif fh == 2:
rjg = n1 * n2
elif fh == 3:
n1, n2 = max(n1, n2), min(n1, n2)
rjg = n1 / n2
print(n1, opr[fh], n2, '= ', end='')
return rjg

def newtest() 生成制定指定数量的四则运算题目

def newtest():
opr = ['＋', '－', '×', '÷']
print('输入题库所需要的题目数量-n:')
n=int(input())
#建立一个答案列表rig[]
rjg=[]
#m为题序
m=0
while m<=(n-1):
#随机四则运算，设置分数四则运算的概率为1/4，整数为3/4
fh = random.randint(0, 4)
if fh==0:
print(m+1,end='、')
rjg.append(newfra())
print(' ')
else:
print(m+1,end='、')
rjg.append(newint())
print(' ')
m=m+1
m=0
print('答案：')
while m<=(n-1):
print(m+1,'、',rjg[m])
m=m+1

print('输入 1 开始逐题练习四则运算')
print('输入 2 开始制作四则运算题库')
n=int(input())
if n1:
print('input "0000" to Quit')
while True:
fh = random.randint(0, 4)
if fh == 0:
rjg = newfra()
jg = input()
if jg == '0000':
break;
sr = Fraction(jg)
if sr == rjg:
print('Bingo!')
else:
print('Sorry, the true answer is', rjg)
else:
rjg = newint()
jg = input()
if jg == '0000':
break;
sr = int(jg)
if sr == rjg:
print('Bingo!')
else:
print('Sorry, the true answer is', rjg)
if n2:
newtest()

psp

总结
1、知识水平有限，对问题理解不够透彻，需提高自身知识素养
2、对Python编程语言不够熟练，今后加强练习
3、对撰写论文还属于初级阶段，今后多写多练