Browse - Programming Tips - How can I make my own custom printf()-like function that accepts

Date: 2014sep26
Language: C/C++
Keywords: snprintf, vsprintf, vprintf, vargs

Q.  How can I make my own custom printf()-like function that accepts
a variable number of arguments?

A.  Use the va_* family of functions like this:

void Log(const char *format, ...)
{
	va_list		ap;
	char		buf[5 * 1024];

	va_start(ap, format);

	vsnprintf(buf, sizeof(buf), format, ap);
	fprintf(fLogHandle, "%s\n", buf);
	fflush(fLogHandle);

	va_end(ap);		
}