Declaration and implementation of object methods

1. Declaration of object Methods

Format:

1 -(int) ADDNUM1: (int) NUM1 andNum2: (int) num2;

2. Features

A: Object method with-opening as-(int) xx;

B: Object methods can only be called by objects

C: The member variable of the current object can be accessed in the object method

D: Call format [Object Name object method name];

3. Example

1 //declares an object method that does not return a value2-(void) run;3 //object methods that declare a return value4-(int) run;5 //An object method that declares a parameter with a return value6-(int) Run: (int) num;7 //object method that declares a return value with multiple arguments8-(int) Run: (intNum and: (int) time;

4. The object method is to implement

a:必须写在以@implementation开头，@end之间b:在声明的后面加上{}即表示实现c:将需要实现的代码写在{}中

Declaration and implementation of object methods