结构体

//
//  main.m
//  01-结构体
//
//  Created by apple on 13-8-12.
//  Copyright (c) 2013年 itcast. All rights reserved.
//

#import 

int main()
{
/*
 NSRange(location length)
 NSPoint\CGPoint
 NSSize\CGSize
 NSRect\CGRect (CGPint CGSize)
 */

    // 使用这些CGPointEqualToPoint、CGRectContainsPoint等函数的前提是添加CoreGraphics框架
    //

    // NextStep  Foundation 


    // 比较两个点是否相同（x、y）
    BOOL b = CGPointEqualToPoint(CGPointMake(10, 10), CGPointMake(10, 10));
    //CGRectEqualToRect(<#CGRect rect1#>, <#CGRect rect2#>)
    //CGSizeEqualToSize(<#CGSize size1#>, <#CGSize size2#>)


    // x (50, 150) y (40 , 90)
    BOOL b2 = CGRectContainsPoint(CGRectMake(50, 40, 100, 50), CGPointMake(60, 45));

    NSLog(@"%d", b2);

    return 0;
}

void point()
{
    CGPoint p1 = NSMakePoint(10, 10);
    NSPoint p2 = CGPointMake(20, 20);// 最常用

    NSSize s1 = CGSizeMake(100, 50);
    NSSize s2 = NSMakeSize(100, 50);
    CGSize s3 = NSMakeSize(200, 60);

    CGRect r1 = CGRectMake(0, 0, 100, 50);

    CGRect r2 = { {0, 0}, {100, 90}};

    CGRect r3 = {p1, s2};

    // 使用CGPointZero等的前提是添加CoreGraphics框架
    CGRect r4 = {CGPointZero, CGSizeMake(100, 90)};


    // CGSizeZero
    // CGRectZero

    // 表示原点
    // CGPointZero == CGPointMake(0, 0)


    // 将结构体转为字符串
    //NSString *str = NSStringFromPoint(p1);

    //NSString *str = NSStringFromSize(s3);

    NSString *str = NSStringFromRect(r1);

    NSLog(@"%@", str);


    // NSLog(@"x=%f, y=%f, width=%f, height=%f", r1.origin.x, r1.origin.y, r1.size.width, r1.size.height);
}

//CGRect myRect(CGFloat x, CGFloat y, CGFloat width, CGFloat height)
//{
//    CGRect rect;
//    rect.origin.x = x;
//    rect.origin.y = y;
//    rect.size.width = width;
//    rect.size.height = height;
//    
//    return rect;
//}

void range()
{
    // @"i love oc"  // love的范围

    //NSRange r1 = {2, 4}; // 不用
    //NSRange r2 = {.location = 2, .length = 4};// 不用
    //NSRange r3 = NSMakeRange(2, 4); // 掌握
    NSString *str = @"i love oc";

    // 查找某个字符串在str中的范围
    // 如果找不到，length=0，location=NSNotFound==-1
    NSRange range = [str rangeOfString:@"java"];
    NSLog(@"loc = %ld, length=%ld", range.location, range.length);
}