objective-c:初始化字符串

使用NSString和NSMutableString ：

 

NSString *simpleString = @"This is a simple string";

 

NSString *anotherString =

[NSString stringWithString:@"This is another simple string"];

 

NSString *oneMorestring =

[[NSString alloc] initWithString:@"One more!"];

 

NSMutableString *mutableOne =

[NSMutableString stringWithString:@"Mutable String"];

 

NSMutableString *anotherMutableOne =

[[NSMutableString alloc] initWithString:@"A retained one"];

 

NSMutableString *thirdMutableOne =

[NSMutableString stringWithString:simpleString];