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我是新手,写了个小孩算数的小程序,不会加入减法,不会设置题目数,不会计算作对多少题....请指点1、如何加入减法 规则是不能减出负数(小孩理解不了),第一个数不能是负数
2、控制做题的数量n,range(0.n)这个n怎么设置 我用float取n也不行
3、比如说做了10道,要对正确错误率计算并打分
代码如下
#coding=utf-8
import random, time
max = float(raw_input("请输入计算范围(1到多少的数相加)1~")) #我想做1到x的数相加 共4个数
print "*"*50
time.sleep(0.3)
print "\n","现在准备算1~",max,"加法","\n"
def suan():
a = random.randint(1, max)
print a
time.sleep(1)
b = random.randint(1, max)
print b
time.sleep(1)
c = random.randint(1, max)
print c
time.sleep(1)
d = random.randint(1, max)
print d
# time.sleep(1)
# e = random.randint(1, max)
# print e
time.sleep(1.5)
# ranswer = float(a + b + c + d + e)
ranswer = float(a + b + c + d)
print "\n"
answer = float(raw_input("请输入你的答案:"))
if float(answer) == float(ranswer):
print "恭喜你答对了"
else:
answer = float(raw_input("答错了,请重新输入答案:"))
if float(answer) == float(ranswer):
print "恭喜你答对了"
else:
print "又答错了!错了!答案是",float(ranswer)
#lun = raw_input("请输入要计算的题目数量:") #这里想控制题目数量实现不了 range(0,lun)或range(0, float(lun))都报错
time.sleep(0.3)
#print "\n","现在你需要做",lun,"道加法题","\n"
print "\n","现在你需要做50道加法题","\n"
for i in range (0,50):
suan()
print "\n"*2
print "*"*50
print "接下来做第",i+2,"题","\n"
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