input: Write a function to store the strings "Hello" and "World" in two separate variables and print them in the same line.
  assert store_strings() == print("Hello World")
  assert store_strings() == print("Hello World")
  assert store_strings() == print("Hello World")
  assert store_strings() == print("Hello World")
  assert store_strings() == print("Hello World")
output: def store_strings():
      var1 = "Hello"
      var2 = "World"
      print(var1 + " " + var2)