CodePanel: July 2013

Tuesday, 30 July 2013

Example of HTML PHP Comment

Type the following code in your text editor..

<HTML>
<HEAD>
<TITLE>Example of Comments</TITLE>
</HEAD>
<BODY>

<?
// This is a single line PHP comment style.
# Shell type comment style.
/* This is a C style comment, we can use it for multiple lines
this is suitable for multiple line comment */
?>
</BODY>
</HTML>

Now save this file as comment.php

Comment in PHP

Various types of syntax are used to add comment in PHP.

Syntax 1

// this is single line comment in php code.

Syntax 2

# this is another style of comment in php code called shell-style.

Syntax 3

/* this is C-style comment in php code used for upto two lines */

Syntax 4

<! example of html comment which is ignored by browser >

Sunday, 28 July 2013

Print Quotient and Remainder in C++

// Write a C++ program that takes two values of x(dividend) and
// y(divisor) from user and prints quotient and remainder of x/y

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int x,y,q,r;
    cout<<"Enter dividend number x : ";
    cin>>x;
    cout<<"Enter divisor number y : ";
    cin>>y;

    cout<<"\n\n------------------------------------\n";
    cout<<" Quotient and Remainder of x/y \n";
    cout<<"------------------------------------\n";

    q = x / y ;
    r = x % y;
    cout<<"Quotient = "<<q<<endl<<"Remainder = "<<r;
    getch();
}

Saturday, 27 July 2013

PHP Start and End tags

There are three basic types of PHP Start and End tags which is also called PHP Opening and Closing tags respectively.

Figure: PHP Starting and Ending Tags

Examples:

You can use any type of php tag in your script.

<?
echo "<P>Example of 1st type of PHP tag.</P>";
?>

<?php
echo "<P>Example of 2nd type of PHP tag.</P>";
?>

<script language="php">
echo "<P>Example of 3rd type of PHP tag.</P>";
</script>

Wednesday, 24 July 2013

Even Numbers in Descending Order

// Write a C++ program that prints odd numbers in
// descending order from a given range.

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int i,n;
    cout<<"Enter any number : ";
    cin>>n;

    cout<<"\n\n------------------------------------\n";
    cout<<" Even numbers in Descending Order \n";
    cout<<"------------------------------------\n";

    if( n%2 != 0 )
    n--;
    for( i = n ; i >= 0 ; i = i-2 )
    cout<<"         "<<i<<endl;
    getch();
}

Sunday, 21 July 2013

Even Numbers in Ascending Order

// Write a C++ program that prints even numbers in
// ascending order up to given range.

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int i,n;
    cout<<"Enter any number for ending range : ";
    cin>>n;

    cout<<"\n\n------------------------------------\n";
    cout<<" Even numbers in Ascending Order \n";
    cout<<"------------------------------------\n";

    for( i = 0 ; i <= n ; i = i+2 )
    cout<<"         "<<i<<endl;
    getch();
}

Odd Numbers in Ascending Order

// Write a C++ program that prints odd numbers in
// ascending order up to given number.

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int i,n;
    cout<<"Enter any number : ";
    cin>>n;

    cout<<"\n\n------------------------------------\n";
    cout<<" Odd numbers in Ascending Order \n";
    cout<<"------------------------------------\n";

    if( n%2 == 0 )
    n--;
    for( i = 1 ; i <= n ; i = i+2 )
    cout<<"         "<<i<<endl;
    getch();
}

Wednesday, 17 July 2013

Odd numbers in descending order

// Write a C++ program that prints odd numbers in
// descending order from a given input.

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int i,n;
    cout<<"Enter any number : ";
    cin>>n;

    cout<<"\n\n------------------------------------\n";
    cout<<" Odd numbers in Descending Order \n";
    cout<<"------------------------------------\n";

    if( n%2 == 0 )
    n--;
    for( i = n ; i >= 1 ; i = i-2 )
    cout<<" "<<i<<endl;
    getch();
}

Monday, 15 July 2013

Temperature Conversion

Convert Fahrenheit to Celsius

C = 5/9(F - 32)

Convert Celsius to Fahrenheit

F = 9/5(C + 32)

Convert Celsius to Kelvin

K = C + 273.15

Convert Kelvin to Celsius

C = K - 273.15

If you are interested in C++ programming, please visit the following links.

Kelvin to Celsius Conversion

// Write a C++ program to convert temperature from
// Kelvin to Celsius.

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    float k,c;

    cout<<"\n------------------------------------\n";
    cout<<" Kelvin to Celsius Conversion \n";
    cout<<"------------------------------------\n\n";

    cout<<"Enter the value of temp in Kelvin : ";
    cin>>k;
    c = k - 273.15 ;
    cout<<"\n\n Temp in Kelvin = "<<c;
    getch();
}

Celsius to Kelvin Conversion

// Write a C++ program to convert temperature from
// Celsius to Kelvin.

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    float c,k;

    cout<<"\n------------------------------------\n";
    cout<<" Celsius to Kelvin Conversion \n";
    cout<<"------------------------------------\n\n";

    cout<<"Enter the value of temp in Celsius : ";
    cin>>c;
    k = c + 273.15 ;
    cout<<"\n\n Temp in Kelvin = "<<k;
    getch();
}

Sunday, 14 July 2013

Farenheit to Celsius conversion

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    float f,c;

    cout<<"\n------------------------------------\n";
    cout<<" Farenheit to Celsius Conversion \n";
    cout<<"------------------------------------\n\n";

    cout<<"Enter the value of temp in Farenheit : ";
    cin>>f;
    c = (f-32)/1.8;
    cout<<"\n\n Temp in Celsius = "<<c;
    getch();
}

Celsius to Farenheit Conversion

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    float c,f;

    cout<<"\n------------------------------------\n";
    cout<<" Celsius to Farenheit Conversion \n";
    cout<<"------------------------------------\n\n";

    cout<<"Enter the value of temp in Celsius : ";
    cin>>c;
    f=(9/5)*c+32;
    cout<<"\n\n Temp in Farenheit = "<<f;
    getch();
}

Saturday, 13 July 2013

if else statement syntax

C++ "if" statement contains following elements.

Test expression
if body

Figure: if statement

The operation of "if" statement is explained by using flow chart.

Figure: if statement flow chart

if statement syntax

C++ "if" statement contains following elements.

Test expression
if body

Figure: if statement

The operation of "if" statement is explained by using flow chart.

Figure: if statement flow chart

Friday, 12 July 2013

do while loop syntax

C++ "do while loop" contains following elements.

Test expression
Increment expression
Loop body

Figure: do while loop

The operation of "do while loop" is explained by using flow chart.

Figure: do while loop flow chart

while loop syntax

C++ "while loop" contains following elements.

Test expression
Increment expression
Loop body

Figure: while loop syntax

The operation of "while loop" is explained by using flow chart.

Figure: while loop flow chart

for loop syntax

C++ "for loop" contains following elements.

Initialization expression
Test expression
Increment expression
Loop body

Figure: for loop syntax

The operation of "for loop" is explained by using flow chart.

Figure: for loop flow chart

Wednesday, 10 July 2013

Print Table in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int x,y;
    cout<<"Enter any number to print that table : ";
    cin>>x;

    cout<<"\n------------------------------- \n";
    cout<<"   Multiplication Table \n";
    cout<<"------------------------------- \n";

    for( y = 1 ; y <= 10 ; y++ )
    cout<<"       "<<x<<" X "<<y<<" = "<<x*y<<endl;
    getch();
}

Prime Numbers from 1 to 500 in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int a,b,temp;

    cout<<"--------------------------------\n";
    cout<<" Prime Numbers from 1 to 500 \n";
    cout<<"--------------------------------\n\n";

    for(a = 2 ; a <= 500 ; a++)
    {
        temp=0;
        for(b = 2 ; b < a ; b++)
        {
            if(a % b == 0)
            temp = 1;
        }
        if(temp == 0)
        cout<<a<<" ,";
    }
    getch();
}

Sum of Prime Numbers from 1 to 1000 in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int a,b,temp;
    double sum = 0;

    cout<<"--------------------------------------\n";
    cout<<" Sum of Prime Numbers from 1 to 1000 \n";
    cout<<"--------------------------------------\n\n";

    for(a = 2 ; a <= 1000 ; a++)
    {
        temp=0;
        for(b = 2 ; b < a ; b++)
        {
            if(a % b == 0)
            temp = 1;
        }
        if(temp == 0)
        sum = sum + a ;
    }
    cout<<sum;
    getch();
}

Sum of Prime Numbers from 1 to 500 in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int a,b,temp;
    int sum = 0;

    cout<<"--------------------------------------\n";
    cout<<" Sum of Prime Numbers from 1 to 500 \n";
    cout<<"--------------------------------------\n\n";

    for(a = 2 ; a <= 500 ; a++)
    {
        temp=0;
        for(b = 2 ; b < a ; b++)
        {
            if(a % b == 0)
            temp = 1;
        }
        if(temp == 0)
        sum = sum + a ;
    }
    cout<<sum;
    getch();
}

Tuesday, 9 July 2013

Even and Odd number test in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int x;
    cout<<"Enter any number : ";
    cin>>x;

    if ( x % 2 == 0 )
    cout<<endl<<x<<" is Even number"; //Remember 0 is an even number
    else
    cout<<endl<<x<<" is Odd number";
    getch();
}

Monday, 8 July 2013

IF Statement tutorial in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr() ;        //to clear output screen at the beginning
    int i ;        //decleration
    cout<<"Enter any number: ";
    cin>>i ;

    if( i > 50 )
    {
        cout<<"The number is greater than 50 ";
        cout<<endl;
    }
    getch();
}

Print Table in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    int a,b;
    cout<<"\nEnter any number : ";
    cin>>a;
    cout<<"\n\n---------------------\n";
    cout<<" Print Table \n";
    cout<<"---------------------\n\n";
    for(b=1 ; b<=15 ; b++)
        cout<<a<<" * "<<b<<" = "<<a*b<<"\n";
    getche() ;
}

Counter in C++

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

void main()
{
    clrscr();
    int a = 0;
    char quit;
    cout<<"\n\n--------------------------------\n";
    cout<<" Counter (Hit any key to count)\n";
    cout<<"--------------------------------\n\n";
    gotoxy(1,12);
    cout<<"--------------------------------\n";
    cout<<" Press \"q\" to quit ";
    while(quit != 'q' && quit != 'Q')
    {
        gotoxy(16,8);
        cout<<a;
        a++;
        quit = getch();
    }
}

C++ While Loop

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr() ;        //to clear output screen at the beginning
    int i   ;        //decleration
    i = 1 ;        //initialization
    while( i < 5 )
    {
        cout<< i ;
        cout<<" The while loop" ;
        cout<<endl ;
        i++ ;
    }
    getch();
}

C++ For Loop

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr() ;        //to clear output screen at the beginning
    int i   ;        //decleration

    for( i = 1 ; i < 5 ; i++ )
    {
        cout<< i ;
        cout<<" The for loop" ;
        cout<<endl ;
    }
    getch();
}

Print Hello World in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    cout<<"Hello World";
    getch();
}

Find Square of a number in C++

#include<iostream.h>
#include<conio.h>
void main()
{
    clrscr();
    float n,a;
    cout<<"Enter any number : ";
    cin>>n;
    a = n*n;
    cout<<"Square of "<<n<<" is = "<<a;
    getch();
}

Print prime numbers from 1 to 1000 in C++

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

void main()
{
    clrscr();
    int a,b,temp;

    cout<<"--------------------------------\n";
    cout<<" Prime Numbers from 1 to 1000 \n";
    cout<<"--------------------------------\n\n";

    for(a = 2 ; a <= 1000 ; a++)
    {
        temp=0;
        for(b = 2 ; b < a ; b++)
        {
            if(a % b == 0)
            temp = 1;
        }
        if(temp == 0)
        cout<<a<<" ,";
    }
    getch();
}

Print Odd numbers from 1 to 500 in C++

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

void main()
{
    clrscr();
    int a=1 , b=500; //you can extend this range i.e b=1000
    cout<<"\n\n---------------------\n";
    cout<<" Odd Numbers \n";
    cout<<"---------------------\n\n";
    while(a<=b)
    {
        if(a%2!=0)
            cout<<a<<" ,";
        a++;
    }
getche() ;
}

Print Odd number in C++

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

void main()
{
    clrscr();
    int a,b;
    cout<<"\nEnter starting range : ";
    cin>>a;
    cout<<"\nEnter ending range : ";
    cin>>b;
    cout<<"\n\n---------------------\n";
    cout<<" Odd Numbers \n";
    cout<<"---------------------\n\n";
    while(a<=b)
    {
        if(a%2!=0)
            cout<<a<<" ,";
        a++;
    }
getche() ;
}

Print even number in C++

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

void main()
{
    clrscr();
    int a,b;
    cout<<"\nEnter starting range : ";
    cin>>a;
    cout<<"\nEnter ending range : ";
    cin>>b;
    cout<<"\n\n---------------------\n";
    cout<<" Even Numbers \n";
    cout<<"---------------------\n\n";
    while(a<=b)
    {
        if(a%2==0)
            cout<<a<<" ,";
        a++;
    }
getche() ;
}

C++ Calculator

#include<iostream.h>
#include<conio.h>
void main()
{
float a,b,z;
char oper;
clrscr();
cout<<"\nEnter First Number A = ";
cin>>a;
cout<<"\nEnter Second Number B = ";
cin>>b;
cout<<"\nChose Your Operation";
cout<<"\n--------------------";
cout<<"\n1 - Addition";
cout<<"\n2 - Substraction";
cout<<"\n3 - Product";
cout<<"\n4 - Division";
cout<<"\n--------------------\n";
cin>>oper;
cout<<"\nResult:\n\n";
switch(oper)
{
case '1':
           z=a+b;
    cout<<"A + B = "<<z;
           break;
case '2':
    z=a-b;
           cout<<"A - B = "<<z;
           break;
case '3':
    z=a*b;
           cout<<"A * B = "<<z;
           break;
case '4':
    z=a/b;
           cout<<"A / B = "<<z;
           break;
default:
    cout<<"Invalid Choice";
}
getch();
}

C++ program for sorting the numbers

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

void main()
{
    clrscr();
    int array[5];
    int p[5],i,j;
    cout<<"Enter any five numbers: "<<endl;
    for(i=0;i<=4;i++)
    {
    cin>>array[i];
    p[i]=array[i];
    }
    int temp;
    cout<<endl<<"After sorting"<<endl<<endl;
    for(i=0;i<5;i++)
    {
        for(j=i+1;j<5;j++)
        {
        if (p[i]>p[j])
            {
            temp= p[i];
            p[i]= p[j];
            p[j]= temp;
            }
        }
    }
    for(i=0;i<=4;i++)
    {
    cout<<p[i]<<" ";
    }
    getche();
}

C++ program to find the area of triangle using Class

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

class triangle
{
private:
    float b ;
    float h ;
public:
    void set();
    void print();
    float area();
} ;
void triangle :: set()
    {
    cout<<"\nEnter the value of Base (then press ENTER key) : ";
    cin>>b;
    cout<<"Enter the value of Height (then press ENTER key): ";
    cin>>h;
    }
void triangle :: print()
    {
    cout<<"\n\nFormula:";
    cout<<"\nArea of Triangle = 1/2(Base * Height)";
    }
float triangle :: area()
    {
    return 0.5*b*h ;
    }

void main()
{
    clrscr();
    cout<<"\nFinding Area of Triangle";
    cout<<"\n---------------------------";
    triangle r ;
    r.set() ;
    r.print() ;
    cout<<"\n\nResult:";
    cout<<"\nArea of Triangle = "<<r.area();
    cout<<"\n---------------------------";
    cout<<"\n\n\nPress any key to Exit";
    getche() ;
}

Saturday, 6 July 2013

C++ program to find the area of triangle

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

void main()
{
    float b ;
    float h ;
    clrscr();
    cout<<"\nFinding Area of Triangle";
    cout<<"\n---------------------------";
    cout<<"\nEnter the value of Base (then press ENTER key) : ";
    cin>>b;
    cout<<"Enter the value of Height (then press ENTER key): ";
    cin>>h;
    cout<<"\n\nFormula:";
    cout<<"\nArea of Triangle = 1/2(Base * Height)";
    cout<<"\n\nResult:";
    cout<<"\nArea of Triangle = "<<b*h*0.5;
    cout<<"\n---------------------------";
    cout<<"\n\n\nPress any key to Exit";
    getche() ;
}

C++ programe to find the area of Rectangle using Class

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

class rectangle
{
private:
    float l ;
    float w ;
public:
    void set();
    void print();
    float area();
} ;
void rectangle :: set()
    {
    cout<<"\nEnter the value of Length (then press ENTER key): ";
    cin>>l;
    cout<<"Enter the value of Width (then press ENTER key) : ";
    cin>>w;
    }
void rectangle :: print()
    {
    cout<<"\n\nFormula:";
    cout<<"\nArea of Rectangle = Length * Width";
    }
float rectangle :: area()
    {
    return l*w ;
    }

void main()
{
    clrscr();
    cout<<"\nFinding Area of Rectangle";
    cout<<"\n---------------------------";
    rectangle r ;
    r.set() ;
    r.print() ;
    cout<<"\n\nResult:";
    cout<<"\nArea of Rectangle = "<<r.area();
    cout<<"\n---------------------------";
    cout<<"\n\n\nPress any key to Exit";
    getche() ;
}

C++ programe to find the area of Rectangle

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

void main()
{
    float l ;
    float w ;
    clrscr();
    cout<<"\nFinding Area of Rectangle";
    cout<<"\n---------------------------";
    cout<<"\nEnter the value of Length (then press ENTER key): ";
    cin>>l;
    cout<<"Enter the value of Width (then press ENTER key) : ";
    cin>>w;
    cout<<"\n\nFormula:";
    cout<<"\nArea of Rectangle = Length * Width";
    cout<<"\n\nResult:";
    cout<<"\nArea of Rectangle = "<<l*w;
    cout<<"\n---------------------------";
    cout<<"\n\n\nPress any key to Exit";
    getche() ;
}

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