CGPoint p = {100, 100};//点 NSLog(@"x=%g,y=%g",p.x,p.y); CGSize size = {100, 200};//大小 NSLog(@"width=%g,height=%g",size.width,size.height); CGRect rect = {p, size};//矩形 NSLog(@"width=%g,height=%g",rect.size.width,rect.size.height); NSRange range;//范围 range.location = 10; range.length = 10; //自定义 struct Person{ int age; }; struct Person person = {18}; NSLog(@"age:%d", person.age);