Cognizant Nexus: January 2013

Thursday, January 31, 2013

Data Structures and Algorithms Question Paper Kerala University

Kerala University Btech Question Papers Information Technology Fourth Semester

Wednesday, January 30, 2013

Code for Program to rotate about reference point in C++ Programming

Code for Program to rotate about reference point in C++ Programming

# include <iostream.h>

# include <conio.h>

# include <graphics.h>

# include <math.h>

char IncFlag;

int PolygonPoints[4][2] =

{{10,100},{110,100},{110,200},{10,200}};

int RefX = 10;

int RefY = 100;

void PolyLine()

{

int iCnt;

cleardevice();

line(0,240,640,240);

line(320,0,320,480);

for (iCnt=0; iCnt<4; iCnt++)

{

line(PolygonPoints[iCnt][0],PolygonPoints[iCnt][1],

PolygonPoints[(iCnt+1)%4][0],PolygonPoints[(iCnt+1)%4][1]);

}

void Translate(int Direction)

{

int iCnt;

for (iCnt=0; iCnt<4; iCnt++)

{

PolygonPoints[iCnt][0] += Direction*RefX;

PolygonPoints[iCnt][1] -= Direction*RefY;

}

void Rotate()

{

float Angle;

int iCnt;

int Tx,Ty;

Translate(-1);

cout<<endl;

Angle = 30.0*(22.0/7.0)/180.0;

for (iCnt=0; iCnt<4; iCnt++)

{

Tx = PolygonPoints[iCnt][0];

Ty = PolygonPoints[iCnt][1];

PolygonPoints[iCnt][0] = (Tx - 320)*cos(Angle) -

(Ty - 240)*sin(Angle) + 320;

PolygonPoints[iCnt][1] = (Tx - 320)*sin(Angle) +

(Ty - 240)*cos(Angle) + 240;

}

Translate(1);

}

void main()

{

int gDriver = DETECT, gMode;

int iCnt;

initgraph(&gDriver, &gMode, "C:\\TC\\BGI");

for (iCnt=0; iCnt<4; iCnt++)

{

PolygonPoints[iCnt][0] += 320;

PolygonPoints[iCnt][1] = 240 - PolygonPoints[iCnt][1];

}

PolyLine();

getch();

Rotate();

PolyLine();

getch();

Friday, January 25, 2013

Cascading Style Sheet inline & internal example

<html>
<head>
<style>
body
{
background-color:lightblue;
}
h1
{
color:red;
text-align:center;
}
h4
{
text-align:left;
background-color:pink;
color:green;
}
p
{
font-family:"Palace Script MT";
font-size:70px;
color:blue;
}
</style>
</head>
<body>
<h1>WELCOME</h1>
<h4>Log onto e-mail</h4>
<p>This is first page...........................
Welcome to first page...........................
Keep trying.....................................
</p>
</body>
</html>

Validation of Username and Password

<html>
<head>
</head>
<body bgcolor="cyan">

<form>

<h3 align="center">username<input type="text" name="userid"/>
</h3>
<br>
<h3 align="center">password<input type="password" name="password"/>
</h3>
<br>
<input type ="button" onclick="check(this.form)" value="submit"/>

<input type="reset" value="reset"/>

</form>

<script language="javascript">

function check(form)
{
if(form.userid.value=="lbs"&&form.password.value=="it")
{
document.write("Welcome lbs!!");
}
else
{
alert("you are a wrong user");
}
}

</script>

</body>

</html>

Calculator using Javascript

<html>
<head>
<script type="text/javascript">

function pushButton(buttonValue) {
if (buttonValue == 'C') {
document.getElementById('screen').value = '';
}
else {
document.getElementById('screen').value += buttonValue;
}
}
function calculate(equation) {
var answer = eval(equation);
document.getElementById('screen').value = answer;

}
</script>
</head>
<body>
<style type="text/css">
table.calc {
border: 2px solid #0034D1;
background-color: #809FFF;
}
input.calc {
width: 100%;
margin: 5px;
}
</style>
<fieldset>
<legend>Calculator</legend>
<table class="calc" cellpadding=4>
<tr><td colspan=3><input class="calc" id="screen" type="text"></td></tr>
<tr>
<td><input class="calc" type="button" value=1 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value=2 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value=3 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value='/' onclick="pushButton(this.value);"></td>
</tr>
<tr>
<td><input class="calc" type="button" value=4 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value=5 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value=6 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value='*' onclick="pushButton(this.value);"></td>
</tr>
<tr>
<td><input class="calc" type="button" value=7 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value=8 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value=9 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value='-' onclick="pushButton(this.value);"></td>
</tr>
<tr>
<td><input class="calc" type="button" value=0 onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value='.' onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value='C' onclick="pushButton(this.value);"></td>
<td><input class="calc" type="button" value='+' onclick="pushButton(this.value);"></td>
</tr>
<tr><td colspan=3><input class="calc" type="button" value='=' onclick="calculate(document.getElementById('screen').value);"></td></tr>
</table>
</body>
</html>

Online QUIZ using Javascript

<HEAD>

<SCRIPT LANGUAGE="JavaScript">

var ans = new Array;
var done = new Array;
var score = 0;
ans[1] = "c";
ans[2] = "a";
ans[3] = "b";
ans[4] = "b";
ans[5] = "d";

function Pop(question, answer) {
if (answer != ans[question]) {
if (!done[question]) {
done[question] = -1;
alert("Wrong! and Your score is now: " + score);
}
else {
alert("You have already answered that!");
}
}
else {
if (!done[question]) {
done[question] = -1;
score++;
alert("Correct!and Your score is now: " + score);
}
else {
alert("You have already answered that!");
}
}
}

function NextLevel () {
if (score > 5) {
alert("Cheater!");
}
if (score >= 3 && score <= 6) {
alert("Access permitted! But there are no more levels if you don't make any ...")

//change previous line to: self.location="js_misc_userquiz2.html" if you make more

}
else {
alert("Access denied! You need 3 points to enter the next level.")
}
}

</SCRIPT>

<BODY>

<font size=7 face=Arial>Online Quiz</font><br><p>
<b>Objective: answer 3 questions correctly. JavaScript required!</b><p>
<noscript>JavaScript is <b><i>disabled</b></i>. Get Netscape 3.0 or turn it on!</noscript>
<hr noshade>
<FORM>
<b>1. Which is the capital of <i>Canada</i>?</b><p>
<input type=radio value="a" onClick="Pop(1, this.value)">Doha<br>
<input type=radio value="b" onClick="Pop(1, this.value)">Canbera<br>
<input type=radio value="c" onClick="Pop(1, this.value)">Ottawa<br>
<input type=radio value="d" onClick="Pop(1, this.value)">Vienna<p>
<b>2. Where is the head quarters of <i>UNESCO</i>?</b><p>
<input type=radio value="a" onClick="Pop(2, this.value)">Paris<br>
<input type=radio value="b" onClick="Pop(2, this.value)">Switzerland<br>
<input type=radio value="c" onClick="Pop(2, this.value)">Brazil<br>
<input type=radio value="d" onClick="Pop(2, this.value)">Delhi<p>
<b>3. Which is the first country to introduce currency notes ?</b><p>
<input type=radio value="a" onClick="Pop(3, this.value)">India<br>
<input type=radio value="b" onClick="Pop(3, this.value)">China<br>
<input type=radio value="c" onClick="Pop(3, this.value)">Pakisthan<br>
<input type=radio value="d" onClick="Pop(3, this.value)">Sri Lanka<p>
<b>4. Who is the first Indian Nobel Laurette?</b><p>
<input type=radio value="a" onClick="Pop(4, this.value)">Amartya Sen<br>
<input type=radio value="b" onClick="Pop(4, this.value)">Rabindra Nath Tagore<br>
<input type=radio value="c" onClick="Pop(4, this.value)">Indira Gandhi<br>
<input type=radio value="d" onClick="Pop(4, this.value)">Mother Theresa<p>
<b>5. Who invented Radio? </b><p>
<input type=radio value="a" onClick="Pop(5, this.value)">Edison<br>
<input type=radio value="b" onClick="Pop(5, this.value)">Bell<br>
<input type=radio value="c" onClick="Pop(5, this.value)">Newton<br>
<input type=radio value="d" onClick="Pop(5, this.value)">Marcony<p>

<CENTER>
<input type=button onClick="NextLevel()" value="Advance to next level">
</CENTER>
</FORM>