func: sprintf_len(char *string, const char *format, ...)
  
  #else
  
  sprintf_len(va_alist) va_dcl
  
  #endif
  
  {
  
  	va_list args;
  
  #ifdef __STDC__
  
  	va_start(args, format);
  
  #else
  
  	char *string;
  
  	char *format;
  
  	va_start(args);
  
  	string = va_arg(args, char *);
  
  	format = va_arg(args, char *);
  
  #endif
  
  	vsprintf(string, format, args);
  
  	return strlen(string);
  
  }
  