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C program to Draw A rainbow

Creating a Rainbow using Graphics Programming in C

#include<stdio.h>
#include<graphics.h>
#include<dos.h>

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// function for making of rainbow
void rainbow()
{

// auto detection
int gdriver = DETECT,gmode;
int x, y, i;

initgraph(&gdriver,&gmode,”C:\\Turboc3\\BGI“);

// message

printf(“\nThis is a Rainbow“);

//for background color
setbkcolor(BLUE+WHITE);

//finding centre x-ordinate of screen

x = getmaxx() / 2;

//finding centre y-ordinate of screen
y = getmaxy() / 2;

for (i=30; i<200; i++)
{

delay(100);

// select color for making of rainbow
setcolor(i/10);

//arc making with fixed centre and increasing radius
arc(x, y, 0, 180, i-10);
}
}
// driver program
int main()
{
rainbow();
return 0;
}

Example of graphics program in C

Graphics program in c examples pdf

Explanation of Graphics Program

(initgraph);- This function is used for initializing graphics mode(were passed three arguments to
initgraph function)

&gdriver:-This is the address of gdriver (Graphics Driver) variable.
&gmode:- This is the address of gmode (Graphics Mode)

“C:\\Turboc3\\BGI”:- This is the directory path where BGI files are stored, This directory only work with Turbo C (DOS) Editor.

delay();- delay function stored under dos.h for holding the
function for some time.

END

Write a C program To draw Rainbow

C program to draw a square using graphics (clickHere)

Full Circle wise Rainbow Program (clickHere)

Note:- Maybe sometime above code doesn’t get user-friendly output, in codeblock ‘or’ any other EDITOR, All of C & C++ program tested in DOS compiler Turbo C.

Also Read

Types of functions in C    [button-blue url=”http://thesmolt.com/functions-in-c-and-graphics/” target=”_self” position=”right”]Read Here[/button-blue]

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