Trouble with C


 
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Old 03-22-2011
Trouble with C

Hey, i am having a problem

First, i know java well and i have used C++ on occasion so i thought i would be able to deal with a class where they program in C. unfortunately i have hit some speed bumps that i am having problems.

Here is my problem:

I have a structure cache_t in the sample program we are supposed to use. In one of my functions i am supposed to use a pointer to an instance of this cache_t struct to perform some operations and return a value.


Code:
struct cache_t
 {
  int nsets;
....
}
cache_access(struct cache_t *cp,....)

How do i get the value of nsets? i have tried &cp.nsets but that just gives me an error:
error: request for member 'nsets' in something not a structure or union

---------- Post updated at 02:32 AM ---------- Previous update was at 01:10 AM ----------

ah, nevermind. As i guessed it was my inexperience with C causing problems. I was looking for cp->nsets.

Thanks anyways for looking.
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XScreenSaver(1) 					      General Commands Manual						   XScreenSaver(1)

NAME
bumps - move distorting spotlight around desktop SYNOPSIS
bumps [-display host:display.screen] [-foreground color] [-background color] [-window] [-root] [-mono] [-install] [-visual visual] [-delay usecs] [-radius pixels] DESCRIPTION
The bumps program takes an image and exposes small, distorted sections of it as if through an odd wandering spotlight beam. The image that it manipulates will be grabbed from the portion of the screen underlying the window, or from the system's video input, or from a random file on disk, as indicated by the grabDesktopImages, grabVideoFrames, and chooseRandomImages options in the ~/.xscreensaver file; see xscreensaver-demo(1) for more details. OPTIONS
bumps accepts the following options: -window Draw on a newly-created window. This is the default. -root Draw on the root window. -mono If on a color display, pretend we're on a monochrome display. -install Install a private colormap for the window. -visual visual Specify which visual to use. Legal values are the name of a visual class, or the id number (decimal or hex) of a specific visual. -delay microseconds Slow it down. -radius pixels Radius of the spotlight in pixels. ENVIRONMENT
DISPLAY to get the default host and display number. XENVIRONMENT to get the name of a resource file that overrides the global resources stored in the RESOURCE_MANAGER property. SEE ALSO
X(1), xscreensaver(1), xscreensaver-demo(1), xscreensaver-getimage(1) COPYRIGHT
Copyright (C) 1999 by Shane Smit. Permission to use, copy, modify, distribute, and sell this software and its documentation for any pur- pose is hereby granted without fee, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. No representations are made about the suitability of this software for any pur- pose. It is provided "as is" without express or implied warranty. CREDITS
Shane Smit <blackend@inconnect.com>, 8-Oct-1999. X Version 11 05-Apr-1999 XScreenSaver(1)