【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

#import <Foundation/Foundation.h>

@interface Person : NSObject
{
    //char *_name;
    NSString *_name;
}
@end

int main()
{
    /*
    // 最简单的创建字符串的方式
    NSString *str = @"isdssf";
    
    char *name = "isdssf";
    
    
    NSLog(@"我在%@上课", str);
    //NSLog(@"%s", name);
    */
    
    int age = 15;
    int no = 5;
    NSString *name = @"哈哈jan";
    // length方法算的是字数
    int size = [name length];
    
    NSLog(@"%d", size);
    
    // 创建OC字符串的另一种方式
    NSString *newStr = [NSString stringWithFormat:@"My age is %d and no is %d and name is %@", age, no, name];
    
    
    NSLog(@"---- %ld", [newStr length]);
    
    return 0;
}