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Basic Shapes

sector() in graphics.h

sector() draws and fills an elliptical sector. It is similar to pieslice(), but you can control separate X/Y radii for stretched wedge shapes.

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Syntax

void sector(int x, int y, int stangle, int endangle, int xradius, int yradius);

Draws and fills a sector inside an ellipse centered at (x, y) from stangle to endangle.

Parameters

  • x, y: center coordinates
  • stangle, endangle: angle range in degrees
  • xradius: horizontal radius
  • yradius: vertical radius
sector(260, 220, 45, 180, 140, 90);

This is useful when circles are too limiting and your visual needs are wider or taller than equal-radius slices.

Full Program

#include <graphics.h>
#include <conio.h>

int main() {
    int gd = DETECT, gm;
    initgraph(&gd, &gm, "");

    setcolor(WHITE);
    setfillstyle(SOLID_FILL, LIGHTBLUE);
    sector(240, 220, 30, 170, 140, 80);

    setfillstyle(SOLID_FILL, YELLOW);
    sector(430, 220, 210, 320, 100, 60);

    getch();
    closegraph();
    return 0;
}

Click Run (DOS) to test this quickly.

Common Mistakes

  • Treating sector() like pieslice() and forgetting separate X/Y radii.
  • Angles outside expected range producing unexpected shape direction.
  • Not calling initgraph() before drawing sector shapes.

See also: ellipse() and pieslice() for related arc and slice drawing functions.