1-4作业

# print('Hello,word!')
# print('你好','世界',sep='-',end='!')
# print('我喜欢python',end='!

')
# print('名字:张三',end='')
# print('年龄:20')

# name = input('请输入名字:')
# pwd = input('请输入密码:')
# if(name=='tom' and pwd=='123'):
#     print('亲爱的tom,欢迎登陆学习系统')

# a = '='
# print(a*40)
# print('=		欢迎进入身份认证系统V1.0')
# print('=1.登陆')
# print('=2.退出')
# print('=3.认证')
# print('=4.修改密码')
# print(a*40)

# num1=10
# num2=3
# def size(num1, num2, size):
#     if size =='+':
#         return num1+num2
#     elif size =='-':
#         return num1-num2
#     elif size =='*':
#         return num1**num2
#     else:
#         print('cuowu')
# if __name__ == '__main__':
#     a = int(input('请输入一个数字:'))
#     b = int(input('请输入一个数字:'))
#     jieguo = size(a, b, '+')
#     print(jieguo)

# a = int(input('请输入一个数字 ：'))
# b = int(input('请输入一个数字'))
# c = a+b
# print(c)

# num1 = 2
# num2 = 4
# num1,num2 = num2,num1
# print('俩个数的值：',num1,num2)

# num1=int(input('请输入一个数字：'))
# num2=int(input('请输入一个数字：'))
# fuhao=input('请输入一个符号：')
# if fuhao =='+':
#     print(num1+num2)
# elif fuhao =='-':
#     print(num1-num2)
# elif fuhao =='*':
#     print(num1*num2)
# elif fuhao=='/':
#     print(num1/num2)

# zhangsan =int(input('请输入张三成绩：'))
# lisi =int(input('请输入李四成绩：'))
# if zhangsan >lisi:
#     print('张三成绩高')
# else:
#     print('李四成绩高')

# a = int(input('请输入成绩：'))
# if a > 90:
#     print('成绩优秀')
# elif a > 80:
#     print('成绩良好')
# elif a > 60:
#     print('成绩中等')
# else:
#     print('成绩差，不合格')

# num1 = int(input('请输入出行月份:(1-4淡季,5-10旺季,其他错误):'))
# sum = 0
# if 1<=num1<=4:
#     print('淡季出行')
#     num2 = int(input('请选择出行方式(1 高铁 2 普通火车):'))
#     if num2 ==1:
#         sum = 60+180
#     elif num2==2:
#         sum = 60+80
#     else:
#         print('选择有误')
# elif 5<=num1<=10:
#     print('旺季出行')
#     num2 = int(input('请选择出行方式(1 高铁 2 普通火车):'))
#     if num2 == 1:
#         sum = 100 + 180
#     elif num2 == 2:
#         sum = 100 + 80
#     else:
#         print('选择有误')
# else:
#     print('输入错误')
# print('总价格:',sum)

# sum =0
# i = 1
# while i <= 100:
#     sum += i
#     i += 1
# print(sum)

# sum = 0
# i=1
# while i<=100:
#     if i%2==0:
#         sum+=i
#     i+=1
# print(sum)

# year=2008
# students = 8
# while students<=20:
#     print('第%d年的人数%d万'%(year,students))
#     year += 1
#     students = students * (1+0.25)
# print('第%d年培训学员人数讲达到20万人'% year)

# print('MyShopping超市管理系统>')
# print('********************************************')
# print('请选择购买的商品的编号:')
# print('1 T恤 2 网球鞋 3 网球拍')
# print('********************************************')
# isShooping = 'y'
# while isShooping =='y':
#     no = int(input('请输入要购买的商品编号:'))
#     if no ==1:
#         print('T恤 价格: 100元')
#     elif no == 2:
#         print('网球鞋 价格: 240元')
#     elif no ==3:
#         print('网球拍 价格: 140元')
#     else:
#         print('抱歉商品已售完,请重选择其他商品!')
#     isShooping = input('是否继续(y/n):')
# print('程序结束!欢迎您下次光临!')

# sum = 0
# for i in range(2,101,2):
#     sum += i
# print(sum)

# rang(5)---0,1,2,3,4
# row = int(input('请输入行数:'))
# for i in range(row):
#     for x in range(i+1):
#         print('* ',end='')
#     print()
# for i in range(row):
#     for x in range(row-i-1):
#         print('* ',end='')
#     print()

# range(9),range(1,10)
# for i in range(10):
#     for j in range(i):
#         print("%d*%d=%d	"%(j+1,i,((j+1)*i)),end='')
# print()