Sun Java System Web Proxy Server 4.0.11 NSAPI Developer's Guide

Parameters

char *s is the buffer to receive the formatted string.

int n is the maximum number of bytes allowed to be copied.

register char *fmt is the format string. The function handles only %d and %s strings. It does not handle any width or precision strings.

va_list args is an STD argument variable obtained from a previous call to va_start.