目标C - 类型铸造从NSString到Int [英] Objective C - Type Casting From NSString to Int

问题描述

我有一个Objective C代码，其中我将一个 NSString 转换为 int ：

I have this bit of Objective C code, where I am casting a NSString to an int:

NSString *a=@"123abc";
NSInteger b=(int) a;
NSLog(@"b: %d",b);

并且 NSLog 生成此输出： / p>

And the NSLog produces this output:

b: 18396

任何人都可以向我解释为什么会发生这种情况？

Can anyone explain to me why this is happening?

我在展示类型下将字符串转换为整数将从字符串中获取数值。

I was under the impression type casting a string to an integer would get the numerical value from the string.

推荐答案

你有整数值指向 NSString 对象。要将字符串解析为整数，您应该这样做：

You've got integer value of pointer to NSString object there. To parse string to integer you should do:

NSString *a = @"123abc";
NSInteger b = [a integerValue];

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