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Game programming tutorial 5 question

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Hey, In tutorial 5, SK has a LOG class, and, um, I''m not sure what the heck ... is and va_list, I can''t find any examples in the code where his variable arguments are used. Any help would be great.

bool LOG::
	Output(char* text, ...)
	va_list arg_list;

	//Initialize variable argument list

	va_start(arg_list, text);

	//Open the log file for append

	if((logfile = fopen("Shining3D.log", "a+"))==NULL)
		return false;

	//Write the text and a newline

	vfprintf(logfile, text, arg_list);
	putc(''\n'', logfile);

	//Close the file


	return true;


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With the va stuff you can use the function like printf and sprintf. You can do stuff like this :

log.OUTPUT("the value is %i",some_value);

which is real handy if you wanna write the values of variables to the log file.

[edited by - George2 on June 30, 2002 3:48:21 PM]

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