while循环

语法：
while 条件：
    语句
    print("any")
    print("any")

猜年龄

age = 50
#user_input_age = int(input("Age is :"))
flag = True
while flag:
    user_input_age = int(input("Age is :"))
    if user_input_age == age:
        print("Yes")
        flag =False
    elif user_input_age > age:
        print("Is bigger")
    else:
        print("Is smaller")  
print("End")

break 终止；continue 继续

循环打印99乘法表

height = 1
while height <= 9:
    tmp = 1
    while tmp <= height:
        print(str(height) + "*" + str(tmp) + "=" + str(height * tmp), end="\t")
        tmp += 1
    print()
    height += 1