常用结构体

1.NSRange 

 typedef struct _NSRange { 2 NSUInteger location; 3 NSUInteger length; 4 } NSRange; 

location 位置 

length 长度

2.NSPoint / CGPoint

struct CGPoint {
    CGFloat x;
    CGFloat y;
};
typedef struct CGPoint CGPoint;

typedef CGPoint NSPoint;

x,y为坐标

3.NSSize / CGSize 

struct CGSize {
    CGFloat width;
    CGFloat height;
};
typedef struct CGSize CGSize;

typedef CGSize NSSize;

width 宽  height 高

4.NSRect / CGRect 矩形

struct CGRect {
    CGPoint origin;
    CGSize size;
};
typedef struct CGRect CGRect;

typedef CGRect NSRect;

origin 为CGPoint型的点 

size 为CGSize型的长度 

范例  

        // NeXTSTEP
        // CG 前缀 CoreGraphics
        NSPoint point = {3,4};
        CGPoint point1 = CGPointMake(5, 6);
        
        NSLog(@"%@",NSStringFromPoint(point));
        

        CGSize size1 = {3,4};
        CGSize size2 = CGSizeMake(3, 4);
        
        NSLog(@"%@",NSStringFromSize(size1));
        // 矩形
        CGRect rect = {point,size1};
        NSLog(@"%@",NSStringFromRect(rect));