How can I do graphics?
Once upon a time, Unix had a fairly nice little set of device-independent plot routines described in plot(3) and plot(5), but they've largely fallen into disuse.
If you're programming for MS-DOS, you'll probably want to use libraries conforming to the VESA or BGI standards.
If you're trying to talk to a particular plotter, making it draw is usually a matter of sending it the appropriate escape sequences; see also question 19.9. The vendor may supply a C-callable library, or you may be able to find one on the net.
If you're programming for a particular window system (Macintosh, X windows, Microsoft Windows), you will use its facilities; see the relevant documentation or newsgroup or FAQ list.
References:
PCS Sec. 5.4 pp. 75-77
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This page by Steve Summit // Copyright 1995 // mail feedback