PHP Hotel Management Project

PHP Hotel Management Project 

This project target Hotel Website or computer science student for their project work. Anyone who wants to make a website on Hotel Management or Any student want to submit their project on the topic of Hotel Management then this project is best solution. I have made it simple, Responsive for all device and professional look. Intention of this project is only for learning for earning money so any use of this project for earning money is prohibited. 

Video Shop 

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Delete Data Grid View Row

There is lots of programming condition when we need to delete a row from data grid view. Deleting a record from Datagridview is pretty simple you just need know following point

• Datagridview event for detect right click of mouse button
• Context Menu setting

Zombie Process

In UNIX or its similar OS environment if a process stops running abnormally but its entry has not removed from process table known as Zombie Process.

Reason

If a process gets stop with exit and meanwhile parent process is sleeping then parent will be able to known the status at sleeping moment and entry of the killed process still in process table which imply Zombie.

C Language NIELIT Exam Paper Solution

NIELIT O Level

C Language  Paper Answer 

January - 2015

1: Objective 

1.1 B
1.2 : C
1.3 : D
Explanation :  Because pointer is not being part of any equation so option a and d is equal.
1.4 : D

Write a C program to modify the constant variable.

Q : Write a C program to modify the constant variable.

Solution : 

#include<stdio.h>

void main()

{

const int a=1;

int *p;

What is automatic type promotion in c

Q :  In the following declaration statement:

char c=’A’;
Variable c stores one byte of memory space while character constants ‘A’ stores one byte memory space. How one byte variables can stores two byte character constant? What is automatic type promotion in c?

Solution : 

Character constant reserve two byte of memory space to represent octal or hexadecimal character constant but char variable stores only its one byte ASCII value.

In C language, char type is used to store a 1 byte integer. When you assign 'A' to char c, you are not assigning the letter A itself into memory. Rather, you are assigning the number (integer) representing the A character. Each letter has a digit that represent it. . Remember that unlike humans, computers cannot understand letters. That's why we need a way to translate them into digits. To do this we use differnet coding styles like: ASCII, UTF-8, etc If your machine use ASCII coding then the value assigned to char c would be 65 (0x41 hex). As you may notice, 0x41 is one byte and can be stored in your char variable.

Automatic type promotion

Some data types like char , short int take less number of bytes than int, these data types are automatically promoted to int or unsigned int when an operation is performed on them. This is called integer promotion. For example no arithmetic calculation happens on smaller types like char, short and enum. They are first converted to int or unsigned int, and then arithmetic is done on them. If an int can represent all values of the original type, the value is converted to an int . Otherwise, it is converted to an unsigned int.

int main()

{

    char a = 30, b = 40, c = 10;

    char d = (a * b) / c;

    printf ("%d ", d);

    return 0;

}

At first look, the expression (a*b)/c seems to cause arithmetic overflow because signed characters can have values only from -128 to 127 (in most of the C compilers), and the value of subexpression ‘(a*b)’ is 1200 which is greater than 128. But integer promotion happens here in arithmetic done on char types and we get the appropriate result without any overflow.

Consider the following program as another example.

Next Question

Text File Input Through C Language

Q : Write a C program to write a line of string in a text file.

Solution : 

#include<stdio.h>

void main()

{

     FILE *pt;

     char ch[100],c;

     int i;

     pt=fopen("test.txt","w");

Gridview FIll VB.net

Dynamic fill data gridview using VB.net

Public Sub fill_gridview(ByRef dt As DataGridView, ByVal sql As String)

        Dim con As New OleDbConnection(getconstr)

        Dim da As New OleDbDataAdapter(sql, con)

        Dim ds As New DataSet

        Try

Division Flipper Using CSS

Division Flipper Using CSS

Girfa

Student Help

Full Code : 

<html>

<head>

    <title>Girfa : Flip Effect </title>

    <style>

        .flip-container {

     perspective: 500px;

}

     /* flip the pane when hovered */

     .flip-container:hover .flipper, .flip-container.hover .flipper {

           transform: rotateY(180deg);

Write a C program that displays the recommended actions depending on the color of a traffic light using the switch statement.

Q : Write a C program that displays the recommended actions depending on the color of a traffic light using the switch statement.

Solution : 

void main (void)

{

   char colour;

Define void data type and write any three use of it.

Q : Define void data type and write any three use of it.

The data type void actually refers to an object that does not have a value of any type. Void is also used to indicate when a function does not return a value or no argument. Such a function is used for its side effect and not for its value. In the function declaration and definition, we have indicated that the function does not return a value by using the data type void to show an empty type, i.e. no value. Similarly, when a function has no formal parameters, the keyword void is used in the function prototype and header to signify that there is no information passed to the function.

What is dangling pointer in C? What is wild pointer in C? Give example.

Q : What is dangling pointer in C? What is wild pointer in C? Give example?

Dangling  Pointer

Dangling or wild is a pointer which does not point valid object. When a pointer has declared it must be assign a valid address memory address otherwise it will point some location which is not valid. These are special cases of memory safety violations. More generally, dangling references and wild references are references that do not resolve to a valid destination.

Void main()

{

          int *pt;

          {

                   int c=10;

                   pt=&c;

       

  }

          printf("\n\t%d",*pt);

}

Setting Combo-box Value and Display Data with VB.Net

I was working on a Brokerage Calculation project where I need to load a table’s data into combo box as in the form of value member and display member because a combo-box store two value ID which not shown at drop down list but reside in combo-box .

We need to Set/Get data through value because it’s mostly primary key and  display mode for display 

field. Take a look on following code:

Dim con As New OleDbConnection(getconstr)

Dim da As New OleDbDataAdapter(sql, con)

What are merits and demerits of array in C?

Q : What are merits and demerits of array in C?

Why we need an array.

We need array when there is a need to process more than data with similar type. For example 

• Taking marks of 10 student needs of ten integer 
• Taking name of more than one character 
• Structure record and many more

Criteria mentioned above can also be achieved through variable , but variables have following drawback which lead to use array instead of Variable.

• Each variable must has unique name which increase complexity when a large number of variables need to make. 
• Each variable load in memory at random order. So if you want to process all variable then you need to process each variable individually because allocation of space is not continuous.

For understand the above point you need to imagine a real life example.

Two close friend group decided to watch a movie and they follow two different approaches as follows

• Friends in Group one purchase ticket individually without any coordination between them for seating arrangement 
• Friend in group two book seats continuously i.e. seats no 1 to 10.

So Group two can make better communication than group one. In same way array works.

Advantage

• Continuous memory allocation.
• Process a collection of similar data type.
• Can be used to make data structure like stack,tree,queue etc.
• Easy to visit each element using index.

Disadvantage

• Static memory allocation 
• Due to static memory allocation number of element cannot be increase nor decrease at run time.
• The elements of array are stored in consecutive memory locations. So insertions and deletions are very difficult and time consuming.

Back to Array Home

Write a C program to find size of structure without using sizeof operator.

Q  : Write a C program to find size of structure without using sizeof operator.

#include<stdio.h>

#include<conio.h>

struct stu

{

     int roll;

     char name[20];

     float marks[3];

};

Write a C program to find the square root of a given quadratic equation.

Q1 : Write a C program to find the square root of a given quadratic equation.

#include <math.h>

int main()

{

    double a, b, c, determinant, root1,root2, realPart, imaginaryPart;

    printf("Enter coefficients a, b and c: ");

    scanf("%lf %lf %lf",&a, &b, &c);

    determinant = b*b-4*a*c;

Write a C program to print given number of terms of a Fibonacci series.

Q 1 :  Write a C program to print given number of terms of a Fibonacci series.

Solution : 

#include<stdio.h>

void main()

{

    int a,b,c;

   c=1;

   a=0;

Write a C program to read a line and print it reverse using recursive function.

Q : Write a C program to read a line and print it reverse using recursive function.

Solution : 

#include<stdio.h>

#include<string.h>

#include<process.h>

void print(int len,char str[])

{

int n=len;

if(n==-1)

exit(1);

Call by value Call by reference

Call by value

The call by value method of passing arguments to a function copies the actual value of an argument into the formal parameter of the function. In this case, changes made to the parameter inside the function have no effect on the argument.

Customized web page print using Java Script

Printing a webpage is another important aspect of web development. If you skip this section then when your user will be print a page then it will print as it is, which not good for all case because we add a lot of formatting images on webpage. So all the things on the page will get printed that will be worse.

Customizing web page output is good practice to make a webpage. Because what we see on web page we don’t need to take output on paper same format so customization is mandatory.

Following example will print table as with custom header.

Roll	Name	City
101	Sona	Vns
102	Amit	Alld
103	Sumi	Alld
104	Rakesh	Vns
105	Jyoti	alld