#include <stdarg.h>

int sscanf(const char *str, const char *fmt,...)
{
	va_list ap;
	int *pval;

	if (strcmp(fmt,"%x")) {
		exit(-1);
	}

	va_start(ap, fmt);
	pval = va_arg(ap,int*);
	va_end(ap);

	*pval = strtol(str,0,16);
	return 1;
}