iOS property declaration clarification

Question

This is a two part question in hopes that I can understand more about the topic.

1) It seems to me that you have two popular optio

Answer 1

Properties are basically the accessor methods. They define the scope of the variable. First case as given above,the variable is not accessible in other classes whereas by declaring a property as in the second case,variable is accessible in other classes also. Also, they are useful for memory management.