结对编程

题目如下：

小学老师要每周给同学出300道四则运算练习题。
这个程序有很多种实现方式：

C/C++
C#/VB.net/Java
Excel
Unix Shell
Emacs/Powershell/Vbscript
Perl
Python

一个或两个运算符(a+b或a+b+c),100以内的数字，不需要写答案。
需要检查答案是否正确，并且保证答案在0.100之间
尽可能地多设置一些条件

小组成员

2152333_KID
2152221_xhy

代码

编写语言：Python
实现功能：

1.实现基础四则运算

2.保证减法有非负解，保证除法有正整数解

3.实现无括号双符号四则运算

4.保证运算一定正确且有非负整数解

5.存储答案用来检查回答的对错

6.每次输出一道题来计算

7.统计对错次数

import random

#KID编写
sym = ['+', '-', '*', '/']
res = []
yn = [0, 0]
for i in range(0, 300):
    ch1 = random.choice(sym)
    ch2 = random.choice(sym)
    cnt = random.randint(1, 3)
    if (cnt == 1):
        num1 = random.randint(2, 101)
        if (ch1 == '+'):
            num2 = random.randint(0, 100-num1+1)
            print("%d+%d=" % (num1, num2))
            res.append(num1+num2)
        if (ch1 == '-'):
            num2 = random.randint(0, num1)
            print("%d-%d=" % (num1, num2))
            res.append(num1-num2)
        if (ch1 == '*'):
            num1 %= 10
            num2 = random.randint(0, 11)
            print("%d*%d=" % (num1, num2))
            res.append(num1*num2)
        if (ch1 == '/'):
            num1 %= 10
            num2 = random.randint(0, 11)
            print("%d/%d=" % (num1*num2, num2))
            res.append(num1)
    else:


#xhy编写
        num1 = random.randint(2, 11)
        num2 = random.randint(2, 9)
        if (ch1 == '+' and ch1 == '+'):
            num1 = random.randint(1, 50)
            num2 = random.randint(1, 50)
            num3 = random.randint(0, 100-num1-num2)
            print("%d+%d+%d=" % (num1, num2, num3))
            res.append(num1+num2+num3)
        if (ch1 == '+' and ch1 == '-'):
            num1 = random.randint(1, 50)
            num2 = random.randint(1, 50)
            num3 = random.randint(0, 100-(num1+num2))
            print("%d+%d-%d=" % (num1, num2, num3))
            res.append(num1+num2-num3)
        if (ch1 == '+' and ch1 == '*'):
            num2 = random.randint(1, 11)
            num3 = random.randint(1, 11)
            num1 = random.randint(0, (100-num2*num3))
            print("%d+%d*%d=" % (num1, num2, num3))
            res.append(num1+num2*num3)
        if (ch1 == '+' and ch1 == '/'):
            num2 = random.randint(1, 11)
            num3 = random.randint(1, 11)
            num1 = random.randint(0, 100-num2)
            print("%d+%d/%d=" % (num1, num2*num3, num3))
            res.append(num1+num2)
        if (ch1 == '-' and ch1 == '-'):
            num2 = random.randint(1, 50)
            num3 = random.randint(1, 50)
            num1 = random.randint(num2+num3, 101)
            print("%d-%d-%d=" % (num1, num2, num3))
            res.append(num1-num2-num3)
        if (ch1 == '-' and ch1 == '+'):
            num2 = random.randint(1, 50)
            num1 = random.randint(num2, 100)
            num3 = random.randint(0, 100-(num1-num2))
            print("%d-%d+%d=" % (num1, num2, num3))
            res.append(num1-num2+num3)
        if (ch1 == '-' and ch1 == '*'):
            num2 = random.randint(1, 10)
            num3 = random.randint(1, 10)
            num1 = random.randint(num2*num3, 100)
            print("%d-%d*%d=" % (num1, num2, num3))
            res.append(num1-num2*num3)
        if (ch1 == '-' and ch1 == '/'):
            num2 = random.randint(1, 11)
            num3 = random.randint(1, 11)
            num1 = random.randint(num2*num3, 100)
            print("%d-%d/%d=" % (num1, num2*num3, num3))
            res.append(num1-num2)
        if (ch1 == '*' and ch1 == '-'):
            num1 = random.randint(1, 11)
            num2 = random.randint(1, 11)
            num3 = random.randint(num1*num2, 100)
            print("%d*%d-%d=" % (num1, num2, num3))
            res.append(num1*num2-num3)
        if (ch1 == '*' and ch1 == '+'):
            num1 = random.randint(1, 11)
            num2 = random.randint(1, 11)
            num3 = random.randint(0, 100-num1*num2)
            print("%d*%d+%d=" % (num1, num2, num3))
            res.append(num1*num2+num3)
        if (ch1 == '*' and ch1 == '*'):
            num2 = random.randint(1, 5)
            num3 = random.randint(1, 5)
            num1 = random.randint(1, 5)
            print("%d*%d*%d=" % (num1, num2, num3))
            res.append(num1*num2*num3)
        if (ch1 == '*' and ch1 == '/'):
            num1 = random.randint(1, 11)
            num2 = random.randint(1, 11)
            num3 = random.randint(1, 11)
            while (num1*num2 % num3 != 0):
                num3 = random.randint(1, 11)
            print("%d*%d/%d=" % (num1, num2, num3))
            res.append(num1*num2/num3)


#KID编写            
        if (ch1 == '/' and ch1 == '+'):
            num1 = random.randint(1, 11)
            num2 = random.randint(1, 11)
            num3 = random.randint(1, 100-num1)
            print("%d/%d+%d=" % (num1*num2, num2, num3))
            res.append(num1+num3)
        if (ch1 == '/' and ch1 == '-'):
            num1 = random.randint(1, 11)
            num2 = random.randint(1, 11)
            num3 = random.randint(0, num1)
            print("%d/%d-%d=" % (num1*num2, num2, num3))
            res.append(num1-num3)
        if (ch1 == '/' and ch1 == '*'):
            num2 = random.randint(1, 5)
            num3 = random.randint(1, 5)
            num1 = random.randint(1, 5)
            print("%d/%d*%d=" % (num1*num2, num2, num3))
            res.append(num1*num3)
        if (ch1 == '/' and ch1 == '/'):
            num2 = random.randint(1, 5)
            num3 = random.randint(1, 5)
            num1 = random.randint(1, 5)
            print("%d/%d/%d=" % (num1*num2*num3, num2, num3))
            res.append(num1)
    ans = int(input())
    if (ans == res[i]):
        print("Success")
        yn[1] += 1
    else:
        print("Error")
        yn[0] += 1
print("做对%d道，做错%d道。" % (yn[1], yn[0]))

实验结果