Practice for 06-class methods

/* Design a calculator class * sum * averaging */#import <foundation/foundation.h>//Tool class: Basically there is no member variable, called the tool class, and the method is basically the class method @interface jisusnqi:nsobject+ (int) SUMOFNUM1: (int) NUM1 andNum2: (int) num2;+ (int) AVERAGEOFNUM1: (int) NUM1 andNum2: (int) num2;@ End@implementation jisusnqi+ (int) SUMOFNUM1: (int) NUM1 andNum2: (int) num2{return num1 + num2;}         + (int) AVERAGEOFNUM1: (int) NUM1 andNum2: (int) num2{int sum = [Jisusnqi sumofnum1:num1 andnum2:num2];     To join a method, you need to use a different method, which can call other methods. This is the encapsulation.     If you want to use a feature, just call it.     If it's a very long way, you don't have to copy it.     First call this inside the formal parameter, and then go to the outside of the other method sum to calculate.     Return (NUM1+NUM2)/2; The NUM1 num2 in this method has nothing to do with the NUM1 num2 in the sum above.    Just the formal parameters! return SUM/2;}    @endint Main () {int a = [Jisusnqi averageofnum1:111 andnum2:333];         Complete it directly with the class name and become a tool class.   int b= [Jisusnqi averageofnum1:11 andnum2:33] NSLog (@ "a=%d", a); The/*//object method needs to create the object, but the code above is the code for the class object, so you do not need to create the object every time Jisusnqi *jsq = [Jisusnqi new];///////[JSQ sumofnum1:10 Andnu m2:13];*/return 0;}

　　

Practice for 06-class methods