char *'s and const char *'s

[Bruce Worden]

Given:

int foo(char *file);

And knowing that foo() really only needs a const char *, it is often called as:

	a = foo("myfile");

but a kindly compiler will warn something like:

	junk.c:7: warning: argument passing of non-const * pointer from const *

A possible solution is:

	char str[] = "myfile";
	.
	.
	.
	a = foo(str);

but this distances the file name from the function call (a minor 
inconvenience).  The question: What is the method preferred/recommended by
professionals and other experienced individuals?
--------------------------------------------------------------------------
C. Bruce Worden                            bruce at seismo.gps.caltech.edu
252-21 Seismological Laboratory, Caltech, Pasadena, CA 91125