World Of Engineers: 2016

Wednesday, 8 June 2016

Design a web page using PHP to insert student information in a database and display all the student details in a page. At the time of insertion student id will be generated automatically and display in same form.

Dbconn.php

<?php

session_start();

ob_start();

error_reporting(0);

$serverName = "localhost";

$dbUserName = "root";

$dbPassword ="";

$dbName = "student";

mysql_connect($serverName,$dbUserName,$dbPassword)

or die(mysql_error());

mysql_select_db($dbName);

Index.php

<?php

require('dbconn.php');

<html>

<head>

</head>

<body>

<h1 align="center"><u>Student Database Table</u></h1>

<tr>

</tr>

<tr>

</tr>

<tr>

<td>Marks</td>

</tr>

<tr>

</tr>

</table>

<?php

if(isset($_POST['btn']))

{

$name = $_POST['t1'];

$roll = $_POST['t2'];

$marks = $_POST['t3'];

$sql = "INSERT INTO student VALUES('','$name','$roll','$marks')";

mysql_query($sql) or die(mysql_error());

}

</form>

<br/><br/><h3><a href="data.php">Show Student Database</a></h3>

</body>

</html>

Data.php

<?php

require('dbconn.php');

ob_start();

<html>

<head>

<title>Student Database</title>

<style>

td{

padding: 10px;

}

th{

padding: 10px;

}

</style>

</head>

<body>

<h1 align="center"><u>Student Database</u></h1>

<th>Marks</th>

<?php

$sql = "select * from student";

$result=mysql_query($sql);

while($rws = mysql_fetch_assoc($result)){ ?>

<?php } ?>

</table>

</body>

</html>

Write a PHP code which takes input from user and perform the sorting (bubble sorting) the searching (linear searching) techniques depending upon the user choice.

Index.php

<html>

<head>

<title>Assignment - 17</title>

</head>

</frameset>

</html>

Left.php

<html>

<head>

</head>

<body>

<a href="bubble.php" >Bubble Sort</a><br/>

<a href="linear.php" >Linear Search</a>

</body>

</html>

Bubble.php

<html>

<head>

<title>Bubble sort</title>

</head>

<body>

Enter numbers : <input type="text" name="num"/><br/>

<br/>

<?php

if($_POST)

{

//get the post value from form

$numbers = $_POST['num'];

//separate the numbers and make into array

$arr = explode(',', $numbers);

function bubbleSort(array $arr)

{

$n = sizeof($arr);

for ($i = 1; $i < $n; $i++) {

for ($j = $n - 1; $j >= $i; $j--) {

if($arr[$j-1] > $arr[$j]) {

$tmp = $arr[$j - 1];

$arr[$j - 1] = $arr[$j];

$arr[$j] = $tmp;

}

return $arr;

}

$result = bubbleSort($arr);

print_r($result);

}

</form>

</body>

</html>

Linear.php

<html>

<head>

<title>Linear Search</title>

</head>

<body>

Enter numbers : <input type="text" name="num"/><br/>

Enter number to search : <input type="text" name="value"/><br/>

<br/>

<?php

if($_POST)

{

//get the post value from form

$numbers = $_POST['num'];

//separate the numbers and make into array

$arr = explode(',', $numbers);

$value = $_POST['value'];

function linear_search(&$arr, $value) {

for ($i = 0; $i < sizeof($arr); $i++) {

if ($arr[$i] == $value) {

return $i;

}

return -1;

}

# Print numbers to search

# Find the index of 'value'

$index = linear_search($arr, $value) + 1;

# Print the index where 'value' is located

echo "\nNumber $value is at index $index\n";

}

</form>

</body>

</html>

Tuesday, 7 June 2016

Write a C program which will take student info such as name, roll no., department as input and store in a structure student_details. Store information about the students library details which includes roll no. and book_id in a structure library_details. The program will be able to calculate the total number of books issued to the student of a particular department

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>
#include<malloc.h>

typedef struct student_details
{
char name[20];
int roll;
int dept;
struct student_details *next;
}student;

typedef struct library_details
{
int roll;
int dept;
int book_id;
struct library_details *next;
}library;

void print_info()
{
printf("\n 1. Enter student details \n");
printf("\n 2. Issue book \n");
printf("\n 3. Count book issued \n");
printf("\n 4. Exit \n");
}

int main()
{
int choice=0;
int roll,dept,book_id,bi;
char name[20];
student *sstart=NULL,*stmp,*sn;
library *lstart=NULL,*ltmp,*ln;

print_info();

while(choice != 4)
{
printf("\n Enter your choice : ");
scanf("%d",&choice);

switch(choice)
{
case 1 : printf("\n Enter name, roll no., dept no : ");
scanf("%s %d %d",&name[20],&roll,&dept);
stmp = (student *)malloc(sizeof(student));
stmp->name[20]=name[20];
stmp->roll=roll;
stmp->dept=dept;
stmp->next=NULL;

if(sstart==NULL)
sstart=stmp;
else
{
sn=sstart;
while(sn->next != NULL)
sn=sn->next;
sn->next=stmp;
}

break;

case 2 : printf("\n Enter roll, dept and book_id : ");
scanf("%d %d %d",&roll,&dept,&book_id);
ltmp = (library *)malloc(sizeof(library));
ltmp->roll=roll;
ltmp->dept=dept;
ltmp->book_id=book_id;
ltmp->next=NULL;

if(lstart==NULL)
lstart=ltmp;
else
{
ln=lstart;
while(ln->next != NULL)
ln=ln->next;
ln->next=ltmp;
}

break;

case 3 : printf("\n Enter dept no and roll no : ");
scanf("%d %d",&dept,&roll);
bi=0;
ln=lstart;
while(ln!=NULL)
{
if(ln->roll == roll && ln->dept == dept)
{
bi++;
}
ln=ln->next;
}
printf("\n Total issued book to dept id %d and roll no %d : %d", dept,roll,bi);

break;

default : printf("WRONG INPUT !!!");
break;
}
}
return 0;
}

Write a program to perform sorting operation of an integer array such that even elements will be sorted in ascending order followed by odd elements sorted is descending order:

#include<stdio.h>
#include<conio.h>
void main()
{
int arr[10],a[10],b[10],m,n,i,j=0,k=0,temp;
printf("\n Enter array size: ");
scanf("%d",&n);
printf("\n Enter the array elements : ");
for(i=0;i<n;i++)
{
scanf("%d",&arr[i]);
if(arr[i]%2==0)
{
a[j]=arr[i];
j++;
}
else
{
b[k]=arr[i];
k++;
}
}
printf("\n Sorted array : ");
for(i=0;i<j;i++)
{
for(m=0;m<j;m++)
{
if(a[i]<a[m])
{
temp=a[i];
a[i]=a[m];
a[m]=temp;
}
}
}
for(i=0;i<j;i++)
printf("%d\t",a[i]);
for(i=0;i<k;i++)
{
for(m=0;m<k;m++)
{
if(b[i]>b[m])
{
temp=b[i];
b[i]=b[m];
b[m]=temp;
}
}
}
for(i=0;i<k;i++)
printf("%d\t",b[i]);
getch();
}

Wednesday, 18 May 2016

Write a C-program to show first n Fibonacci and Non-Fibonacci numbers

#include <stdio.h>
#include <conio.h>

void main()
{
int a=0,b=1,i,j,k,n;
clrscr();
printf("\n Enter the range: ");
scanf("%d",&n);
printf("\n Fibonacci series: ");
for(i=0;i<n;i++)
{
printf("%d\t",a);
j=a+b;
a=b;
b=j;
}
printf("\n Non-fibonacci series: ");
a=0,b=1;
for(i=0;i<n;)
{
j=a+b;
a=b;
b=j;
for(k=a+1;k<j;k++,i++)
if(i<n)
printf("%d\t",k);
}
getch();
}

Write a C program to print the reverse of a floating point number.

#include <stdio.h>
#include <conio.h>

int fun(int a)
{
int r, res=0;
while (a != 0)
{
r=a%10;
res=res*10 + r;
a=a/10;
}
return res;
}

int main()
{
float a,r;
int nm,nm1,rev1,rev2;
printf("\n Enter floating point number: ");
scanf("%f",&a);
nm=a;
r=a-nm;
nm1= r * 10000;
rev1=fun(nm);
rev2=fun(nm1);
printf("\n Reversed number = %d.%d",rev2,rev1);
getch();
}

Design a web page using PHP which will print different patterns according to user choice.

<html>
<head>
<meta charset="UTF-8">
<title>Pattern</title>
</head>
<body>
<form action="" method="post">
<h1><u>PHP project to print patterns</u></h1>

<h3>Please choose a pattern to print</h3>
1.<image src="1.jpg"/>  
2.<image src="2.jpg"/>  
3.<image src="3.jpg"/>  <br/><br/>
Enter your choice : <input type="text" name="pat"/><br/><br/>
Enter no of rows : <input type="text" name="r"/><br/><br/>
<br/><input type="submit" name="btn" value="Print Pattern"/><br/><br/>
<?php

if(isset($_POST['btn']))
{
$n= $_POST['r'];
if($_POST['pat']==1)
{
for($x=0;$x<=$n;$x++)
{
for($y=1;$y<=$x;$y++)
{
echo "*";
}
echo "<br>";
}
}
elseif ($_POST['pat']==2)
{
for($x=$n;$x>=1;--$x)
{
for($y=1;$y<=$x;++$y)
{
echo "*";
}
echo "<br>";
}

}
elseif ($_POST['pat']==3) {

$temp=$n;
for($row=1;$row<=$n;$row++)
{
for($c=1;$c<$temp;$c++)
{
echo "&nbsp ";
}
$temp--;
for ($c = 1; $c <= 2 * $row - 1; $c++) {
echo "*";
}
echo "<br>";
}
}
else
echo "<br/>Invalid Input!!!";
}

?>
</form>
</body>
</html>

Write a PHP code to test whether a given year is leap year or not.

<html>
<body>
<h2>PHP Script to find Leap year or not </h2>
<form action="" method="post">
<input type="text" name="year" />
<input type="submit" />
</form>
</body>
</html>

<?php

if( $_POST )
{
//get the year
$year = $_POST[ 'year' ];

//check if entered value is a number
if(!is_numeric($year))
{
echo "Strings not allowed, Input should be a number";
return;
}

//multiple conditions to check the leap year
if( (0 == $year % 4) and (0 != $year % 100) or (0 == $year % 400) )
{
echo "$year is a leap year";
}
else
{
echo "$year is not a leap year";
}

}

?>

Write a program to implement the concept of singleton pattern.

#include<iostream.h>
#include<conio.h>
class GlobalClass
{
int m_value;
static GlobalClass *s_instance;
GlobalClass(int v = 0)
{
m_value = v;
}
public:
int get_value()
{
return m_value;
}
void set_value(int v)
{
m_value = v;
}
static GlobalClass *instance()
{
if (!s_instance)
s_instance = new GlobalClass;
return s_instance;
}
};

// Allocating and initializing GlobalClass's
// static data member. The pointer is being
// allocated - not the object inself.

GlobalClass *GlobalClass::s_instance = 0;

void foo(void)
{
GlobalClass::instance()->set_value(1);
cout << "foo: global_ptr is " << GlobalClass::instance()->get_value() << '\n';
}

void bar(void)
{
GlobalClass::instance()->set_value(2);
cout << "bar: global_ptr is " << GlobalClass::instance()->get_value() << '\n';
}

int main()
{
clrscr();
cout << "main: global_ptr is " << GlobalClass::instance()->get_value() << '\n';
foo();
bar();
getch();
return 0;
}

Using template, write a suitable class declaration and implementation for a generic array class and define a stack class using the array class, where array will support push and pop operations and not the [ ] operator.

#include<iostream.h>
#include<conio.h>
#define MSIZE 5

template <class T>
class Carray{

public:
int size;
T array[MSIZE];
Carray(){
size=0;
}
};
template <class T>
class Stack{
Carray <T> stack;
public:
int push(T item){
if(stack.size==MSIZE)
{
cout<<"Stack OverFLow"<<endl;
return -1;
}
stack.array[stack.size++]=item;
cout<<item<<" Is pushed into stack"<<endl;
return 0;
}
T pop(){
if(stack.size==0)
{
cout<<"Stack UnderFlow"<<endl;
return -1;
}
cout<<stack.array[stack.size-1]<<" Is popped"<<endl;
return stack.array[--stack.size];
}

};
void main(){
Stack<int> stack;
int i;
clrscr();
for(i=0;i<6;i++){
stack.push(i);
}
for(i=0;i<6;i++){
stack.pop();
}

getch();
}

Write a program to implement following main() function: int main() { string str1(“CSE”),str2(“MCKVIE”); string str3; str3=str1+str2; return 0; }

#include<iostream.h>
#include<conio.h>
#include<string.h>

class string{
public:
char str[100];
string(char *);
string(){
strcpy(str,"");
}
void operator=(const string);

string operator+(const string& s){
string s1("");
strcpy(s1.str,this->str);
strcat(s1.str,s.str);
return s1;

}
friend ostream &operator<<(ostream &output,const string s){
output<<s.str<<endl;
return output;
}

};

string::string(char *s){
strcpy(str,s);
}
void string::operator=(const string s){

strcpy(this->str,s.str);

}
void main()
{

string str1("CSE"),str2("MCKVIE");
string str3;
clrscr();
str3=str1+str2;
cout<<str3;
getch();
}

Write a program to implement following main() function: int main() { string str1(“MCKVIE”),str2(“MCKVIE”); if(str1= =str3) cout<<”A”; else cout<<”B”; return 0; }

#include<iostream.h>
#include<conio.h>
#include<string.h>

class string{
public:
char str[100];
string(char *);
int operator==(const string& s){
if(! strcmp(this->str,s.str))
return 1;
else
return 0;

}

};

string::string(char *s){
strcpy(str,s);
}

void main()
{

string str1("MCKVIE"),str2("MCKVIE");

clrscr();
if(str1==str2)
cout<<"A";
else
cout<<"B";
getch();
}

Write a program to implement following main() function:

int main() { string str2(“MCKVIE”);string str3=str2;cout<<str3; return 0; }

#include<iostream.h>
#include<conio.h>
#include<string.h>

class string{
public:
char str[100];
string(char *);
string operator=(const string);
friend ostream &operator<<(ostream &output,const string s){
output<<s.str<<endl;
return output;
}
};

string::string(char *s){
strcpy(str,s);
}
string string::operator=(const string s){
string s1("");
strcpy(s1.str,s.str);

return s1;
}

void main()
{
// int a=0;
string str2("MCKVIE");
string str3=str2;
clrscr();
cout<<str3;
getch();
}

Write a C++ program to create a „MATRIX‟ class of size m×n. Overload the „+‟ operator to add two Matrix objects. Write a main function to implement it.

#include<iostream.h>
#include<conio.h>

class MATRIX{

public:
int m,n;
int val[10][10];
int i,j;
void print();
MATRIX operator+(const MATRIX);

};

MATRIX MATRIX:: operator+(const MATRIX mat1){
int i,j;
MATRIX rmat;
rmat.m=mat1.m;
rmat.n=mat1.n;
for(i=0;i<mat1.m;i++)
for(j=0;j<mat1.n;j++)
rmat.val[i][j]=mat1.val[i][j]+this->val[i][j];

return rmat;
}
void MATRIX::print(){
int i,j;
for(i=0;i<m;i++){
for(j=0;j<n;j++)
cout<<val[i][j]<<"\t";
cout<<endl;
}
}
void main(){
int m,n;
int i,j;
MATRIX mat1,mat2,rmat;
clrscr();
cout<<"Enter The value of row and col : ";
cin>>m>>n;
mat1.m=m;
mat1.n=n;
mat2.m=m;
mat2.n=n;
cout<<"Enter the value of Matrix 1 : ";
for(i=0;i<m;i++)
for(j=0;j<n;j++)
cin>>mat1.val[i][j];
cout<<"Enter the value of Matrix 2 : ";
for(i=0;i<m;i++)
for(j=0;j<n;j++)
cin>>mat2.val[i][j];

rmat=mat1+mat2;
cout<<"\nSum Of Matrix is \n";
rmat.print();
getch();
}

Write a C program which will take student info such as name, roll no., department as input and store in a structure student_details. Store information about the students library details which includes roll no. and book_id in a structure library_details. The program will be able to calculate the total number of books issued to the student of a particular department.

#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <conio.h>
typedef struct student_detail{
int roll;
int department;
struct student_detail *next;
}student;

typedef struct library_detail {
int roll;
int book_id;
struct library_detail *next;
}library;

void print_info(){

printf("1 . Enter Student Detail.\n");
printf("2 . Issue Book.\n");
printf("3 . Count Book Issued to a department.\n");
printf("4 . Exit.\n");

}

int main()
{
int choice=0;
int roll,dept,book_id,bi;
student *sstart=NULL,*stmp,*sn;
library *lstart=NULL,*ltmp,*ln;
// int c=0,l=0;
clrscr();
print_info();

while(choice!=4){
printf("\nEnter Your Choice : ");
scanf("%d",&choice);
/* c=0,l=0;

stmp=sstart;
ltmp=lstart;
while(stmp!=NULL){
c++;
stmp=stmp->next;
}
while(ltmp!=NULL){
l++;
ltmp=ltmp->next;
}

printf("\n Total Entry of student and libray: %d %d\n",c,l);
*/
switch(choice){
case 1: printf("Enter Roll and department no : ");
scanf("%d %d",&roll,&dept);
stmp=(student *) malloc(sizeof(student));
stmp->roll=roll;
stmp->department=dept;
stmp->next=NULL;

if(sstart==NULL)
sstart=stmp;
else
{
sn=sstart;
while(sn->next!=NULL)
sn=sn->next;
sn->next=stmp;

}
break;
case 2: printf("Enter Roll and book id : ");
scanf("%d %d",&roll,&book_id);
ltmp=(library *) malloc(sizeof(library));
ltmp->roll=roll;
ltmp->book_id=book_id;
ltmp->next=NULL;

if(lstart==NULL)
lstart=ltmp;
else
{
ln=lstart;
while(ln->next!=NULL)
ln=ln->next;
ln->next=ltmp;

}
break;
case 3:
printf("Enter Department No: ");
scanf("%d",&dept);
bi=0;
ln=lstart;
while(ln!=NULL){
roll=ln->roll;
sn=sstart;
while(sn!=NULL){
if(sn->roll==roll && sn->department==dept){
bi++;
break;
}
sn=sn->next;

}
ln=ln->next;
}
printf("Total Issued Book to dept id %d is %d \n.",dept,bi);
break;
default: printf("Wrong Input!!\n\n");
print_info();
break;
}
}

return 0;
}

Wednesday, 24 February 2016

C prgram to show that C= A * Transpose(B) where A,B,C are 3x3 matrices

#include <stdio.h>

int main()
{
int m, n, p, q, c, d, k, sum = 0;
int first[10][10], second[10][10], transpose[10][10], multiply[10][10];

printf("Enter the number of rows and columns of first matrix\n");
scanf("%d%d", &m, &n);
printf("Enter the elements of first matrix\n");

for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
scanf("%d", &first[c][d]);

printf("Enter the number of rows and columns of second matrix\n");
scanf("%d%d", &p, &q);

if (n != p)
printf("Matrices with entered orders can't be multiplied with each other.\n");
else
{
printf("Enter the elements of second matrix\n");

for (c = 0; c < p; c++)
for (d = 0; d < q; d++)
scanf("%d", &second[c][d]);

// transpose of second matrix

for (c = 0; c < m; c++)
for( d = 0 ; d < n ; d++ )
transpose[d][c] = second[c][d];

// multiply A * Transpose(B)

for (c = 0; c < m; c++) {
for (d = 0; d < q; d++) {
for (k = 0; k < p; k++) {
sum = sum + first[c][k]*transpose[k][d];
}

multiply[c][d] = sum;
sum = 0;
}
}

printf("Product of entered matrices:-\n");

for (c = 0; c < m; c++) {
for (d = 0; d < q; d++)
printf("%d\t", multiply[c][d]);

printf("\n");
}
}

return 0;
}

C prgram to find out nPr and nCr

#include <stdio.h>

long factorial(int);
long find_ncr(int, int);
long find_npr(int, int);

int main()
{
int n, r;
long ncr, npr;

printf("Enter the value of n and r\n");
scanf("%d%d",&n,&r);

ncr = find_ncr(n, r);
npr = find_npr(n, r);

printf("%dC%d = %ld\n", n, r, ncr);
printf("%dP%d = %ld\n", n, r, npr);

return 0;
}

long find_ncr(int n, int r) {
long result;

result = factorial(n)/(factorial(r)*factorial(n-r));

return result;
}

long find_npr(int n, int r) {
long result;

result = factorial(n)/factorial(n-r);

return result;
}

long factorial(int n) {
int c;
long result = 1;

for (c = 1; c <= n; c++)
result = result*c;

return result;
}