1.guess age
age_of_princal = 56
guess_age = int( input(">>:") )
'''多行注释
if guess_age == age_of_princal then
print("yes")
else
print("no ")
'''
if guess_age == age_of_princal:
print("Yes,you got it..")
elif guess_age > age_of_princal:
print("shoud try samller..")
else:
print("try bigger ...")
2.
score = int(input("score:"))
if score >90:
print("A")
elif score >80:
print("B")
elif score >70:
print("C")
elif score >50:
print("D")
else:
print("滚")
3.
msg = "我爱北京天安门?"
print(msg) #this code is for ....
"""print(msg)多行注释
print(msg)
print(msg)"""
print(msg)
#print(msg)单行注释
4.
death_age = 80
name = input("your name:")
age = input("your age:") #input 接受的所有数据都是字符串，即便你输入的是数字，但依然会被当成字符串来处理
print( type(age) )
#int integer =整数 把字符串转成int,用int(被转的数据)
#str string =字符串 把数据转成字符串用str(被转的数据)
print("Your name:",name)
#print("You can still live for ", death_age - int(age)," years ....")
print("You can still live for " + str(death_age - int(age)) +" years ....")