Reading and outputting UTF-8 strings in c/cocoa -

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In an Objective-C / Coco app, I am using the C function to open a text file, line it Use some lines in the -buy-line and third party function. In psuedo-code: 

  char * line = fgets (aFile); Library_function (line); // This function asks for a UTF-8 encoded four * string

Unless the input file contains special characters (such as Accent or UTF-8 BOM), where But library function, however, if I do this: 

  four * line = fgets (aFile); NSString * stringobject = [NSString string withUTF8 string: line]; Library_function ([stringObj UTF8String]);

Then it all works well and the string gets output correctly.

That [NSString ... What is line I am not? Am I doing something wrong with the line at the beginning? Or is it completely something else?

UTF-8 is a multi-byte character set, which means that some letters There are a number of bytes needed (those you have played). C is of type , so the definition of C of "character" does not match Unicode.

If you want to read Unicode with standard C RTL, you can use

(wchar_t may also be used; I've never researched it.)

Or you can use NSString, which already supports Unicode.


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