"""
1. 请输入考试分数，并判断考试成绩的等级
score >= 85 A
score >= 75 B
score >= 60 C
score >= 40 D
score >= 0 E
2. 输入一个5位数，判断这个数字是否是回文数
"""
print("---------------------第一题---------------------")
score = int(input("请输入考试分数："))
if score > 100:
print("输入的考试成绩有误")
elif score >= 85:
print("A")
elif score >= 75:
print("B")
elif score >= 60:
print("C")
elif score >= 40:
print("D")
elif score >= 0:
print("E")
else:
print("输入的考试成绩有误")
print("---------------------第二题---------------------")
# 回文数例如：12321
num = input("请输入一个5位数字：")
if len(num) != 5:
print('不是5位数字')
elif num[0] == num[4] and num[1] == num[3]:
print("此数字是回文数：",num)
else:
print("此数字不是回文数")
"""
1、 用户登陆程序需求:
1. 输入用户名和密码;
2. 判断用户名和密码是否正确? (name='root', passwd='westos')
3. 为了防止暴力破解， 登陆仅有三次机会， 如果超过三次机会， 提示错误次数过多，账号已被冻结
2、使用了 while 来计算 1 到 100 的总和
"""
print("---------------------第一题---------------------")
times = 0
while times < 3:
name = input("请输入用户名：")
passwd = input("请输入密码：")
if name == 'root' and passwd == 'westos':
print('登录成功')
break
times += 1
print('用户名或者密码失败,失败次数：', times)
else:
print('错误次数过多，账号已被冻结')
print("---------------------第二题---------------------")
count = 0
a = 1
while a <= 100:
#print(a)
a += 1
count += a
print(count)
"""
99乘法表
1 * 1 = 1
2 * 1 = 2 2 * 2 = 4
3 * 1 = 3 3 * 2 = 6 3 * 3 = 9
4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16
5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25
6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36
7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49
8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64
9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81
"""
for i in range(0,10):
for j in range(1,i+1):
print("{a} * {b} = {c} ".format(a=str(i), b=str(j), c=i*j), end='' )
print('\n')‘
