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line() Function in C Programming Language

line() Function in C
line() is a library function of graphics.c in c programming language which is used to draw a line from two coordinates. line() function 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.
Syntax for line() Function in C
#include <graphics.h> void line(int x1, int y1, int x2, int y2);
X coordinate of first point
Y coordinate of first point.
X coordinate of second point.
Y coordinate of second point. This is a predefined function named line which is used to draw a line on the output screen. It takes 4 arguments, first two parameters represent an initial point and the last two arguments are for the final points of the line.
/* draw a line from a point(x1,y1) to point(x2,y2) by line() function example */ /*C graphics program to draw a line.*/ #include <graphics.h> #include <conio.h> main() { int gd = DETECT, gm; //init graphics initgraph(&gd, &gm, "C:/TURBOC3/BGI"); /* if you are using turboc2 use below line to init graphics: initgraph(&gd, &gm, "C:/TC/BGI"); */ //draw a line /* line() function description parameter left to right x1: 100 y1: 100 x2: 200 y2: 100 */ line(100,100,200,100); //will draw a horizontal line line(10,10,200,10); //will draw another horizonatl line getch(); closegraph(); return 0; }

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