【学习笔记】【OC语言】NSString

1.字符串的快速创建
NSStirng *str = @“Hello”;

2.使用静态方法创建

3.使用%@输出字符串
NSString *name = @”dssf”;
NSLog(@“我的名字是%@”,  name);

4.代码

 1 #import <Foundation/Foundation.h>
 2
 3 @interface Person : NSObject
 4 {
 5     //char *_name;
 6     NSString *_name;
 7 }
 8 @end
 9
10 int main()
11 {
12     /*
13     // 最简单的创建字符串的方式
14     NSString *str = @"isdssf";
15
16     char *name = "isdssf";
17
18
19     NSLog(@"我在%@上课", str);
20     //NSLog(@"%s", name);
21     */
22
23     int age = 15;
24     int no = 5;
25     NSString *name = @"哈哈jan";
26     // length方法算的是字数
27     int size = [name length];
28
29     NSLog(@"%d", size);
30
31     // 创建OC字符串的另一种方式
32     NSString *newStr = [NSString stringWithFormat:@"My age is %d and no is %d and name is %@", age, no, name];
33
34
35     NSLog(@"---- %ld", [newStr length]);
36
37     return 0;
38 }