Declaration: void bar3d(int left, int top, int right, int bottom, int depth, int topflag);
bar3d function is used to draw a 2-dimensional, rectangular filled in bar . Coordinates of left top and right bottom corner of bar are required to draw the bar. left specifies the X-coordinate of top left corner, top specifies the Y-coordinate of top left corner, right specifies the X-coordinate of right bottom corner, bottom specifies the Y-coordinate of right bottom corner, depth specifies the depth of bar in pixels, topflag determines whether a 3 dimensional top is put on the bar or not ( if it's non-zero then it's put otherwise not ). Current fill pattern and fill color is used to fill the bar. To change fill pattern and fill color use setfillstyle.
C program of bar3d
#include<conio.h>
main()
{
int gd = DETECT, gm;
initgraph(&gd, &gm, "C:\\TC\\BGI");
bar3d(100, 100, 200, 200, 20, 1);
getch();
closegraph();
return 0;
}