The C programming language allows drawing graphic shapes such as lines, rectangle, circles and so on. In this article, you will learn to write a program that draws a line on the console.
This program is written using turbo C++ compiler installed on a windows 7 64-bit PC.
Problem Definition
The program uses the C graphic header files and uses the builtin functions to draw a line on the screen. The important steps in this program are:
- Declare the graphic driver and graphic mode variable.
- Initialize the graphic driver
- Initialize the graph and set the path to the graphic support.
- Draw the line
- Close the graph.
Each of these steps are specific lines of codes in the program.
Source Code – C Line Drawing
/* Program to draw a line using C graphic support */
#include <stdio.h>
#include <conio.h>
#include <graphics.h>
#include <stdlib.h>
int main() /* Main function begins */
{
/* Declare the graphic variables */
int gdriver, gmode, userpattern;
int x, y, x_max, y_max;
/* Initialize the graphics driver to autodetect the graphics drivers */
gdriver = DETECT;
userpattern = 1;
/* Initialization of graph and path set to graphics interface */
initgraph(&gdriver, &gmode, "D:\\TURBOC3\\BGI");
/* Set the line style */
setlinestyle(DOTTED_LINE,userpattern, 3);
/* Draw the line */
x = 100;
y = 70;
x_max = 350;
y_max = 70;
line(x, y, x_max, y_max);
/* close the graph */
getch();
closegraph();
return 0;
}Output
