ios 是否有定义 long 或 integer 的最大值的常量？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/9760662/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Is there a constant which defines the max value of long or integer?
提问by u1053236
In java, there is a constant for the max value of Long. Such as:
在java中，Long的最大值有一个常量。如：
long minBillId = Long.MAX_VALUE
Is there a constant for the max value of long or int in Obj-C?
Obj-C 中 long 或 int 的最大值是否有常量？
回答by Amit Shah
If you import limits.hyou can call LONG_MAX
如果您导入，limits.h您可以调用LONG_MAX
For reference this siteshows how to get the max for all types as such:
作为参考，该站点显示了如何获得所有类型的最大值，例如：
#import <limits.h>
// ...
NSLog(@"CHAR_MIN: %c", CHAR_MIN);
NSLog(@"CHAR_MAX: %c", CHAR_MAX);
NSLog(@"SHRT_MIN: %hi", SHRT_MIN); // signed short int
NSLog(@"SHRT_MAX: %hi", SHRT_MAX);
NSLog(@"INT_MIN: %i", INT_MIN);
NSLog(@"INT_MAX: %i", INT_MAX);
NSLog(@"LONG_MIN: %li", LONG_MIN); // signed long int
NSLog(@"LONG_MAX: %li", LONG_MAX);
NSLog(@"ULONG_MIN not defined, it's always zero: %lu", 0);
NSLog(@"ULONG_MAX: %lu", ULONG_MAX); // unsigned long int
NSLog(@"LLONG_MIN: %lli", LLONG_MIN); // signed long long int
NSLog(@"LLONG_MAX: %lli", LLONG_MAX);
NSLog(@"ULLONG_MIN not defined, it's always zero: %llu", 0);
NSLog(@"ULLONG_MAX: %llu", ULLONG_MAX); // unsigned long long int
回答by bryanmac
INT_MAX should resolve to 2147483647
INT_MAX 应解析为 2147483647
This:
这个：
#import <Foundation/Foundation.h>
int main (int argc, const char * argv[])
{
NSInteger foo = INT_MAX;
NSLog(@"foo: %li", foo); // li because 64 bit OSX cmd line app
return 0;
}
Outputs:
输出：
2012-03-18 13:58:54.509 Craplet[51324:707] foo: 2147483647
回答by Jason
NSLog(@"INT_MIN: %i", INT_MIN);
NSLog(@"INT_MAX: %i", INT_MAX);
NSLog(@"LONG_MIN: %li", LONG_MIN);
NSLog(@"LONG_MAX: %li", LONG_MAX);
