Objective c 如何添加一个NSLog字符串？

我需要通过两个NSLog显示一行？我以为密码

int i = 0;
NSLog(@"Number ");
...
NSLog(@"%d", i);

展示

0号

但它表明

数字
0

NSLog自动插入新行。如何添加第一行NSLog

这是我的密码：

...
NSLog(@"%@ ", [array objectAtIndex:0]);
if(i==0) NSLog(@"undefined");
else NSLog(@"%d", i);

---

NSLog

类似于

printf

，在这里可以直接内联构建字符串

int a = 1;
int b = 2;
int c = a + b;

NSLog(@"%d + %d = %d", a, b, c);

输出

1+2=3

---

注意：%i和%d都代表整数类型。

请尝试使用正确的格式：-

 NSString *myString = @"";
 if(i==0) 
 {
  myString =[NSString    
  stringWithFormat:@"%@,%@",[array  
  objectAtIndex:0],@"undefined"];
  }
  else 
{ 
 myString =[NSString     
 stringWithFormat:@"%@,%d",[array  
objectAtIndex:0],i];
 }
NSLog(@"%@",myString);

NSString myString = @"";

if(i==0) myString = @"undefined";
else myString = [NSString stringWithFormat:@"%i", i];

NSLog(@"%@ %@", [array objectAtIndex:0], myString);

 NSString *myString = @"";
 if(i==0) 
 {
  myString =[NSString    
  stringWithFormat:@"%@,%@",[array  
  objectAtIndex:0],@"undefined"];
  }
  else 
{ 
 myString =[NSString     
 stringWithFormat:@"%@,%d",[array  
objectAtIndex:0],i];
 }
NSLog(@"%@",myString);