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The C language does not provide any support for graphics as standard. C is designed to be as generic as possible, but graphics are a system-specific feature. To use graphics in C you need a third-party graphics library that supports your operating system and hardware, however generic libraries such as OpenGL are available. Nevertheless, it is not possible to draw curves, you can only approximate a curve using a series of short lines. The shorter the lines and the higher the resolution, the smoother the curve will appear.

Assuming you have access to an OpenGL library, you can draw an ellipse as follows:

void DrawEllipse(float cx, float cy, float rx, float ry, int num_segments)

{

const float pi = atan (1) * 4;

float theta = 2 * pi / float (num_segments);

float c = cosf (theta);

float s = sinf (theta);

float x = 1;

float y = 0;

float t;

glBegin (GL_LINE_LOOP);

for (int i = 0; i < num_segments; ++i)

{

glVertex2 f (x * rx + cx, y * ry + cy);

t = x;

x = c * x - s * y;

y = s * t + c * y;

}

glEnd();

}

Q: How you can draw an ellipse in C language?

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Continue Learning about Math & Arithmetic

isn't it an arty word, like when you draw an ellipse-- so when you see/draw something with an ellipse you call it an elliptical drawing

One can create a perfect ellipse using two pins on a piece of string and a pencil. Place the pins at opposite sides and then loop the string around them. Finally place the pencil in the loops and pull it around the pins to draw the ellipse.

c the book mastering c

Circular segment

A circle is perfectly round, and has one center. An ellipse is like a circle with TWO "centers", and each "center" is called a "focus". The plural of "focus" is "foci". Take a piece of string and tie a loop in each end. Put a pin through the loops, and hold it still in the center of the circle. Place the tip of your pencil at the center of the string, and you can draw a circle by keeping the string taut. Now take TWO pins, and put one pin at each end of the string; place the pins at some short distance apart, and hold them there. Place your pencil and draw, and the shape you draw will be an ellipse. The two pinpoints are the focuses, or foci, of the ellipse. Eccentricity is a measure of how far the ellipse varies from a circle. An ellipse with an eccentricity of zero _IS_ a circle, while an eccentricity of 1.0 is a straight line, with that string stretched out straight. In astronomy, every natural orbit is an ellipse.

Related questions

It depends what ellipse you will draw :P

g "Two points a and b are 100 mm part a point c is 75mm from a and 60 mm from b draw an ellipse passing through a b and c?"

To draw ellipse or circle shapes and paths.

The C language is not a graphics language and you cannot draw logic gates using it. C is a programming language, and it is possible to use a graphics library to do so, but you did not specify which library you were using. Please restate the question.

write a program draw circle and ellipse by using oval methods in java

isn't it an arty word, like when you draw an ellipse-- so when you see/draw something with an ellipse you call it an elliptical drawing

here you go nah...

One can create a perfect ellipse using two pins on a piece of string and a pencil. Place the pins at opposite sides and then loop the string around them. Finally place the pencil in the loops and pull it around the pins to draw the ellipse.

c the book mastering c

If a = b then it is a circle; otherwise it is an ellipse.

The major axis is the line that joins the two foci (focuses) of the ellipse. If all you have is a picture of an ellipse and you don't know where the foci are, you can still find the major axis in a few seconds: It's the longest possible line that you can draw completely inside the ellipse, and it's the line straight across the ellipse between the two opposite "points of the egg".

Ax2 + By2 = C