1. #import<Foundation/Foundation.h>
   
2. int main()
   
3. {
   
4. NSString *str = @"itcast"; //创建字符串
   
5. char *name = "itcast";
   
6. NSLog(@"%s",name);
   
7. NSLog(@"%@",str);
   
8. 
   
9. int age = 15;
   
10. int no = 5;
    
11. NSString *name1 = @"jack";
    
12. 
    
13. NSString *newStr = [NSString stringWithFormat:@"My age is %d and no is %d and name is %@",age,no,name1];//第二种创建方法
    
14. NSLog(@"%@",newStr);
    
15. // 计算字符串的个数，不是字符数
    
16. int size = [name1 length];
    
17. NSLog(@"%d",size);
    
18. NSLog(@"%ld",[newStr length]);
    
19. return 0 ;
    
20. }

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1. #import<Foundation/Foundation.h>
   
2. int main()
   
3. {
   
4. NSString *str = @"itcast"; //创建字符串
   
5. char *name = "itcast";
   
6. NSLog(@"%s",name);
   
7. NSLog(@"%@",str);
   
8. 
   
9. int age = 15;
   
10. int no = 5;
    
11. NSString *name1 = @"jack";
    
12. 
    
13. NSString *newStr = [NSString stringWithFormat:@"My age is %d and no is %d and name is %@",age,no,name1];//第二种创建方法
    
14. NSLog(@"%@",newStr);
    
15. // 计算字符串的个数，不是字符数
    
16. int size = [name1 length];
    
17. NSLog(@"%d",size);
    
18. NSLog(@"%ld",[newStr length]);
    
19. return 0 ;
    
20. }

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