以objective-c字符串格式添加零

Question

快速问题:我试图用NSString stringWithFormat格式化字符串填充具有特定数量的零的空格.
例如,我想:

@"The number is %d", 5   // I want this to output 'the number is 05'
@"the number is %d", 10  // I want this to output 'the number is 10'

我知道如何用Java做到这一点,但我似乎无法在objective-c中找到相同的功能.

任何帮助都会很棒.

Answer 1

如果在Java中使用System.out.printf(),则它与Objective-C(和C)中的格式语法相同:

NSLog(@"The number is %02d", 5);
NSLog(@"The number is %02d", 10);