C++ : Between 3 Largest Numbers Determining Integer in C++

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I. ALGORITHM

{Read three integers, determine the largest number among threenumbers and display it to screen}


DECLARATION

x, y, z: integer


DESCRIPTION
read (x, y, z)
if (x> y) and (x> z) then write ('The biggest number is = x)
else if (y> x) and (y> z) then write (the largest number is = y)
else write (the largest number is z)
end if

II. Source code in C + +

# include
# include

class appeal {
friend istream& operator >> ( istream&, vs& );
public:
appeal (){};
void compare () {
if ((x> y) & & (x> z))
cout <<"the largest number:" <else if ((y> x) & & (y> z))
cout <<"the largest number:" <else
cout <<"the largest number:" <}
private:
int x, y, z;
};

istream& operator>> (istream& in, appeals& number) {
cout <<"Numbers first =";
in>> bilangan.x;
cout <<"The second number =";
in>> bilangan.y;
cout <<"third number =";
in>> bilangan.z;
return ins;
}

int main () {
appeal number;
cin>> number;
bilangan.bandingkan ();

return 0;
}

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C++ : Algorithms and Programming Calculating Triangle Area

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I. ANALYSIS
Input: t (high) area = l * a / 2

II. ALGORITHM


{Reading the real data in the form of long triangular base (a) and high triangle (t) and calculate the extent of the length of the base and a certain high. Area of ​​triangle is calculated by the formula L = 1 / 2 at. The value L in print as the output to the output device.}
DECLARATION a : real {long triangular base, in units of cm} t : real {height triangle, in units of cm} L : real {area of ​​the triangle} DESCRIPTION read (a) read (t) L <- (a * t) / 2 write (L)
III. Source code in C + +
# Include # Include
class circle { friend ostream& operator <<(ostream&, circle&); friend istream& operator>> (istream&, circle&); public: hitung_keliling void () {circumference = 2 * pi * r;} hitung_luas void () {area = pi * r * r;} private: int r; float perimeter, area; };
istream & operator>> (istream& in, circle& A) { cout <<"Finger - finger circle:"; in>> A.r; return is; }
ostream & operator <<(ostream& out, circles& A) { A.hitung_keliling (); A.hitung_luas (); out <<"Circumference =" <download

Kriptografi AMD5

download source code kriptografi AMD5

   Kriptografi telah dikenal dan dipakai cukup lama sejak kurang lebih tahun 1900 sebelum masehi pada prasasti-prasasti kuburan. Kriptografi sendiri berasal dari kata “Crypto” yanng berarti rahasia dan “graphy” yang berarti tulisan. Jadi, dapat dikatakan kriptografi adalah tulisan yang tersembunyi. Dengan adanya tulisan yang tersembunyi ini, orang-orang yang tidak mengetahui bagaimana tulisan tersebut disembunyikan tidak akan mengetahui bagaimana cara membaca maupun menerjemahkan tulisan tersebut. William Stallings mendefinisikan kriptografi sebagai “the art and science of keeping messages secure”.

    Kriptografi menjadi dasar bagi keamanan komputer dan jaringan karena yang menjadi pokok dari fungsi komputer dan jaringan adalah data ataupun informasi. Komputer dan jaringannya menjadi sarana bagi distribusi data dan informasi, maka data dan informasi tersebut harus diamankan agar hanya orang-orang yang berhak mengaksesnya yang dapat mengetahui maupun menggunakan data tersebut. Salah satu cara yang paling banyak digunakan dalam mengamankan data adalah dengan kriptografi. Data-data tersebut diamankan dengan sedemikian rupa oleh pengirim sehingga orang lalin tidak dapat mengenali data tersebut. Hal ini lebih dikenal dengan nama proses enkripsi. Data atau pesan yang asli sering disebut sebagai plaintext dan data yang telah dienkripsi disebut sebagai chipertext ata menurut terminologi yang lebih tepat enchiper.

    Data yang telah dienkripsi disebut chipertext karena data asli (plaintext) telah mengalami proses di dalam sebuah algoritma kriptografi atau lebih dikenal dengan nama chiper. Kebalikannya, proses merubah pesan yang telah dienkripsi (chipertext) menjadi pesan asli (plaintext) disebut sebagai proses dekripsi atau dechiper.

Source code nya dapat di download di sini

JAVA : Konstanta Java

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At Java, we utilize key word (keyword) final to point out konstanta.

example:

lingkaran.java

public class lingkaran {    public static void main(String args[]) {        final double PHI = 3.14;        double radius = 100;        System.out.println(“keliling lingkaran berjari -             jari”+radius+”adalah”+(2*PHI*radius));    } }

Final key word betoken point application goes to variable at do once only, point afterwards at variable it can't at changes eternally.

convention:

Name konstanta is uppercase the lot, e.g.:

final double PHI = 3.14 final double CM_PER_INCHI = 2.54;

Often at Java, konstanta applies to all method / function at one class. Konstanta this ordinary at konstanta's mention brazes (class constant)  We can make konstanta class with static's key word final.

example:

Lingkaran.java

public class lingkaran {    public static final double PHI = 3.14;        static void test() {    lingkaran t = new lingkaran();    double radius = 100;    System.out.println(“keliling lingkaran berjari - jari”+radius+”adalah”+t.calcCircumference(radius));    System.out.println(“keliling lingkaran berjari - jari”+radius+”adalah”+t.calcArea(radius));    }    public static void main(String args[]){       test();    }    static double calcCircumference(double r){       return (2*PHI*r);    }    static double calcArea(double r){       return (PHI*r*r);    } }

konstanta's definition at do outside main's method(). Thus, konstanta can at utilizes at other methods at same class.

More again, konstanta at samples at declaration utilizes access modifier well worth public, therefore methods at even other class gets to utilize konstanta by points konstanta's name by calls class name as follows:

<nama kelas>.<nama konstanta>.

On example upon konstanta PHI was pointed to utilize identifier following:

Lingkaran.PHI

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JAVA : Keyword and Literal Java

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KEYWORD

keyword is identifier that at utilizes Java for a special aim. keyword's list Java as follows:

Abstract	Double	Int	Super	Boolean
Else	Interface	Switch	Break	Extends
Long	Synchronized	Byte	False	Native
This	Byvalue	Final	New	Threadsafe
Case	Finally	Null	Throw	Catch
Float	Package	Transient	Char	For
Private	True	Class	Goto	Protected
Try	Const	If	Public	Void
Continue	Implements	Return	While	Default
Import	Short	Do	instanceof	static

We may not utilize keyword as identifier.

literal

Bigger writing for variable is important, literal at Java consists:

1. number

2. character

3. string

Number consisting of integer (integer)  number floats (floating - pont)  and boolean. Boolean was looked on by number. boolean's point to true and false at looks on as 1 and 0. Character always point to Unicode's character. string contains character-string.

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JAVA : Integer Operator Java

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operating binary integer operator on integer couple. Following is binary integer operator table.

Deskripsi	Operator
Increase	+
Cut back	-
multiple	*
division	/
Rest for	%
Bitwise AND	&
Bitwise OR	|
Bitwise XOR	^
Left-shift	<<
Right-shift	>>
Zero-fill-right-shift	>>>

sum operator, cut back, multiple, and division(+, -, *, /) doing operation as on aritmatika integer.

Highlight that needs at cermati is make the point division operator work with integer transfer. Division operator transfer integer quotient. If division results rest for therefore modulus operator(%) can at utilizes to get rest point for that.

Following is program Arithmetic to point out aritmatika's operator job binary:

Arithmatic.java

package arithmatic; public class Arithmatic {    public static void main (String args[]) {        int x = 17, y = 5;        System.out.println(“x =” + x);        System.out.println(“y =” + y);        System.out.println(“x + y” + (x+y));        System.out.println(“x - y” + (x-y));        System.out.println(“x * y” + (x*y));        System.out.println(“x / y” + (x/y));        System.out.println(“x % y” + (x%y));    } }

Instruction:

javac Arithmetic.java

Arithmetic's Java

Result Programs:

x = 17

y. = 5

x + y. = 22

x y. = 12

x * y. = 85

x / y. = 3

x % y. = 2

Quotient x / y. which is 17 / 5 results 3. modulus Operation x % y. which is 17 % 5 result 2 (which is rest for integer).

matenatika's ala division with zero don't at defines. Java treats this division by throws / result runtime exeception. We will study exeception alone ala.

bitwise AND's operator, OR, and XOR

bitwise and's operator, or, and xor(&, |, and ^) act on individual bit bit integer. This operator sometime beneficent while integers that at utilizes as field's bit.

example:

Number purpose as field's bit is subject to be declaration a group flag binary number. One number int that mempresentasikan can until 32 flag that different because int at deep keeping 32 bits.

Bitwise.java

package bitwise; public class Bitwise {    public static void main (String args[]) {        Int x = 5, y = 6;        System.out.println(“x =” + x);        System.out.println(“y =” + y);        System.out.println(“x & y” + (x&y));        System.out.println(“x | y” + (x|y));        System.out.println(“x ^ y” + (x^y));   } }

Instruction:

javac Bitwise

Bitwise's Java

Result programs:

x = 5

y. = 6

x & y. = 4

x | y. = 7

x ^ y. = 3

To understand output result, we shall understand representasi int's number in two' s complement.

Shift operator

Looking at samples following:

x<< 3;

y.>> 7;

z.>>> 2;

On first example, variable individual bit bit integer x is angled to left as much three positions. On second example, bit bit of y. at angles to right as much position sevens. On example drding to point out z. at angles as much 2 positions, with give duck's egg on two left utmost positions.

Looking at programs following:

Shift.java

package shift; public class Shift {    Public static void main (String args[]){        Int x = 7;        System.out.println(“x =” + x);        System.out.println(“x >> 2 =” + (x >>> 2));        System.out.println(“x << 1 =” + (x << 1));        System.out.println(“x >>> 1 =” + (x >>> 1));    } }

Instruction:

javac Shift.java

Shift Java

Result Programs:

x = 7

x>> 2 = 1

x<< 1 = 14

x>>> 1 = 3

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