void openfile(char *,FILE**)
what does double stars indicates
The second argument type is a pointer to a pointer to FILE type.
Didn't you understand what's a pointer?
Evidently this function returns FILE* pointer via this argument. What's a strange perversion...
Well, it has one advantage over a return value -- you have to pass in an address, whereas you could ignore a return value. I don't think that's how I would write it, though.
5.2.4.1 Translation limits
1 The implementation shall be able to translate and execute at least one program that contains at least one instance of every one of the following limits:
...
- 12 pointer, array, and function declarators (in any combinations) modifying an arithmetic, structure, union, or incomplete type in a declaration
...
Implementations should avoid imposing fixed translation limits whenever possible.
With VC++ 2008 Express, compiling a C program, I was able to compile char*(500 stars) ptr = "Hello"; before the parser complained. And then the error message was "parser stack overflow, program too complex"
Interestingly, as a c++ program I was able to give it about 920 stars before the compiler crapped out -- then it was during the link stage, not the compile stage.
Last edited by Ancient Dragon; Jun 9th, 2009 at 11:18 pm.
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I don't think that's how I would write it, though. 
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