The header file graphics.h contains
lineto() function which draws a line from current position to the point(x,y).
Note : Use
getx() and
gety() to get the current position.
Syntax :
lineto(int x, int y);
where,
(x, y) are the coordinates upto which the
line will be drawn from previous point.
CASE 1 : When the initial position of point is (0,0)
Below is the implementation of lineto() function with initial position at origin :
C
// C Implementation for lineto()
#include <graphics.h>
// driver code
int main()
{
// gm is Graphics mode which is
// a computer display mode that
// generates image using pixels.
// DETECT is a macro defined in
// "graphics.h" header file
int gd = DETECT, gm;
// initgraph initializes the
// graphics system by loading a
// graphics driver from disk
initgraph(&gd, &gm, "");
// lineto function
lineto(250, 100);
getch();
// closegraph function closes the
// graphics mode and deallocates
// all memory allocated by
// graphics system .
closegraph();
return 0;
}
Output :
CASE 2 : When the initial position of point is not (0, 0)
Below is the implementation of lineto() function with initial position other than origin :
C
// C Implementation for lineto()
#include <graphics.h>
// driver code
int main()
{
// gm is Graphics mode which is
// a computer display mode that
// generates image using pixels.
// DETECT is a macro defined in
// "graphics.h" header file
int gd = DETECT, gm;
// initgraph initializes the
// graphics system by loading a
// graphics driver from disk
initgraph(&gd, &gm, "");
// change initial position of point
// with moveto function
moveto(100, 100);
// lineto function
lineto(250, 100);
getch();
// closegraph function closes the
// graphics mode and deallocates
// all memory allocated by
// graphics system .
closegraph();
return 0;
}
Output :
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