C++ Programming Code Examples
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line() Function in C++ Programming Language
line() Function in C++
The header file graphics.h contains line() function which is used to draw a line from a point(x1, y1) to point(x2, y2) i.e. (x1, y1) and (x2, y2) are end points of the line. The function line() draws a line on the graphics screen between two specified points. So this function requires four parameters namely x1, y1, x2, and y2 to represent two points. This function draws a line from (x1, y1) coordinates to (x2, y2) coordinates on the graphics screen.
Syntax for line() Function in C++
void line(int x1, int y1, int x2, int y2);
x1
X coordinate of first point
y1
Y coordinate of first point.
x2
X coordinate of second point.
y2
Y coordinate of second point.
You can change "linestyle", "pattern", "thickness" of the line by setlinestyle() function.
/* draw a line in C++ graphic code example */
#include<iostream.h>
#include<conio.h>
#include<graphics.h>
void main()
{
int gd=DETECT,gm,x,y;
clrscr();
initgraph(&gd,&gm,"c:\\TC\\bgi"); //INITIALISING GRAPHICS MODE
setlinestyle(0,0,3);
outtextxy(300,150,"LINE()");
line(350,60,200,200);
outtextxy(300,300," CURRENT POSITION");
linerel(320,350);
outtextxy(335,315,"LINEREL()");
outtextxy(30,30," CURRENT POSITION");
lineto(30,200);
outtextxy(70,45,"LINETO()");
getch();
closegraph();
}
