how to find string length using strlen in objectiv

问题:

i have a string strored in str variable i want to find string length which is available in str variable

i hav tried with strlen(str); its not working...

回答1:

If your string is a C-String, then you can use strlen(str).

If it is a NSString *str, then you can use NSUInteger length = [str length];

回答2:

What type is your string? If it's an NSString, you find the length like this:

int len = [myString length];

But it will be different if your string is not an NSString.

回答3:

Use length method, like this:

NSString *myString = @"Hello World";
int myLength = [myString length]; //myLength is now 11