"Umesh" <fr****************@gmail.comwrote in message

news:11**********************@x35g2000prf.googlegr oups.com...

I've not used graphics.h before. How can I plot a function say

y=sin(x) ?

It's a platform-specific header.

I've no idea how it works, but presumably you will need to intialise a

graphics display. Then there will almost certainly be a function called

something like plotxy(). It may take floats but will probably take integers.

Your x axis will go from -PI to + PI, whilst your y axis will go from -1 to

+1. However to really see the shape of the function, keep the scales the

same, that's why we measure angles in radians.

So all you need to do is maintain a double x, and take pixel steps from -PI

to +PI. Call sin() to get y. Then convert from the mathematical coordinates

to the pixel coordinates, making x = 0, y = 0 the centre pixel of the

display, and call the plot function.

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