#4
print("use \"*\" to repeat string \n", "-"*30,'\n' , "*"*30)

#3
name = "Xu Yang"[1]
print(name)

#2
DPD = "Windows's default program dir is C:\\Programe Files"
print(DPD)

#1
name = input("Your Name is : ")
age = input("Your Age is : ")
print("Your Name is : " + name + " and your age is " + age)
print("Your Namge and age are : ",name,age)
