Jumat, 15 Juni 2012

Preprocessor directives

Preprocessor directives

  • Adalah merupakan perintah yang termasuk ke dalam program, tetapi bukankah intruksi dari program itu sendiri, tetapi untuk Preprocessor.
  • Selalu diawali dengan tanda “#” (tanda pagar)
  • Beberapa Prepocessor directives, antara lain adalah :
  1. #define
  2. #include
  3. #if-endif
  4. #if - #else - #endif
  5. #elif
  6. #undef
  7. #ifdef – ifndef
Penjabaran :

1.    #define
  • Bisa juga disebut nama lain atau pengganti nama lain.
  • Fungsinya untuk mendefinisikan suatu nilai tertentu kepada suatu nama konstanta.
  • Bentuk Umum
          #define nama_konstanta teks
  • Listing Program
#include <stdio.h>
#include <conio.h>
#include <iostream.h>

//-------dari sini
#define absen (n1*0.1)   /*inilah deklarsi #define*/
#define tugas (n2*0.2) //Define bisa juga berisi rumus
#define uts   (n3*0.3)
#define uas   (n4*0.4)
#define total (n1+n2+3+n4)/4
#define mulai() main()
#define bersih() clrscr()
#define cetak cout
#define ketik cin
//--------sampai sini

garis()
{cout<<"-------------------------------------------------";}

mulai()
{
float n1,n2,n3,n4;
float total ;
bersih();
cetak<< "masukan nilai absensi = ";  ketik>>n1;  //fungsi define
cout<<  "masukan nilai tugas   = ";  cin>>n2;
cetak<< "masukan nilai uts     = ";  ketik>>n3;
cout<<  "masukan nilai uas     = ";  cin>>n4;
garis();
cout<<endl;
cout<<" nilai murni absensi  = " <<n1<< "* 10% = " <<absen<<endl;
cout<<" nilai murni tugas    = " <<n2<< "* 20% = " <<tugas<<endl;
cout<<" nilai murni uts      = " <<n3<< "* 30% = " <<uts<<endl;
cout<<" nilai murni uas        = " <<n4<< "* 40% = " <<uas<<endl;
garis();
cout<<endl;
cout<<" nilai akhir yang di peroleh sebesar = "<<total;
getch( );
}

Maka Screenshootnya :

Kamis, 25 November 2010

Membuat Link BerEfek Warna Warni

Siang gene minum es kaya.e enak banget yach. Hmm walaupun udara panas banget siang ini, tapi gak ada salahnya nyoba-nyoba JavaScript ma sekedar posting di Blog. Kaline mo share ke temen-temen gimana caranya buat Link Ber-Efek Warna Warni Ato sering disebut Efek Rainbow. Kaya.e dah banyak yang punya ya, tapi sayangnya aku baru aja nyoba tadi, bukane ketinggalan jaman tapi baru pengen nyoba ntu Efek tadi n gada salahnya aku Postingin ntu kode di Blogku kali aja dibutuhin lagi ma aku jadi tinggal Kopas dah.



Ntar hasilnya bisa dilihat di rtn-peaceinheart.blogspot.com
  • Sentuh bagian LINK dan akan terlihat Efeknya

Langsung ajah yach

1. Masih seperti biasa Log-In dulu dengan ID masing-masing

2. Lalu masuk ke “Rancangan/Tata Letak” Trus “Elemen Laman”

3. Kemudian “Tambah Gadget” dan pilih “HTML/JavaScrip”

4. Kalo sudah masukkan kode dibawah ini :


<script type='text/javascript'>
// <![CDATA[

var rate = 20; // Increase amount(The degree of the transmutation)


////////////////////////////////////////////////////////////////////
// Main routine

if (document.getElementById)
window.onerror=new Function("return true")

var objActive; // The object which event occured in
var act = 0; // Flag during the action
var elmH = 0; // Hue
var elmS = 128; // Saturation
var elmV = 255; // Value
var clrOrg; // A color before the change
var TimerID; // Timer ID


if (document.all) {
document.onmouseover = doRainbowAnchor;
document.onmouseout = stopRainbowAnchor;
}
else if (document.getElementById) {
document.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
document.onmouseover = Mozilla_doRainbowAnchor;
document.onmouseout = Mozilla_stopRainbowAnchor;
}


//=============================================================================
// doRainbow
// This function begins to change a color.
//=============================================================================
function doRainbow(obj)
{
if (act == 0) {
act = 1;
if (obj)
objActive = obj;
else
objActive = event.srcElement;
clrOrg = objActive.style.color;
TimerID = setInterval("ChangeColor()",100);
}
}


//=============================================================================
// stopRainbow
// This function stops to change a color.
//=============================================================================
function stopRainbow()
{
if (act) {
objActive.style.color = clrOrg;
clearInterval(TimerID);
act = 0;
}
}


//=============================================================================
// doRainbowAnchor
// This function begins to change a color. (of a anchor, automatically)
//=============================================================================
function doRainbowAnchor()
{
if (act == 0) {
var obj = event.srcElement;
while (obj.tagName != 'A' && obj.tagName != 'BODY') {
obj = obj.parentElement;
if (obj.tagName == 'A' || obj.tagName == 'BODY')
break;
}

if (obj.tagName == 'A' && obj.href != '') {
objActive = obj;
act = 1;
clrOrg = objActive.style.color;
TimerID = setInterval("ChangeColor()",100);
}
}
}


//=============================================================================
// stopRainbowAnchor
// This function stops to change a color. (of a anchor, automatically)
//=============================================================================
function stopRainbowAnchor()
{
if (act) {
if (objActive.tagName == 'A') {
objActive.style.color = clrOrg;
clearInterval(TimerID);
act = 0;
}
}
}


//=============================================================================
// Mozilla_doRainbowAnchor(for Netscape6 and Mozilla browser)
// This function begins to change a color. (of a anchor, automatically)
//=============================================================================
function Mozilla_doRainbowAnchor(e)
{
if (act == 0) {
obj = e.target;
while (obj.nodeName != 'A' && obj.nodeName != 'BODY') {
obj = obj.parentNode;
if (obj.nodeName == 'A' || obj.nodeName == 'BODY')
break;
}

if (obj.nodeName == 'A' && obj.href != '') {
objActive = obj;
act = 1;
clrOrg = obj.style.color;
TimerID = setInterval("ChangeColor()",100);
}
}
}


//=============================================================================
// Mozilla_stopRainbowAnchor(for Netscape6 and Mozilla browser)
// This function stops to change a color. (of a anchor, automatically)
//=============================================================================
function Mozilla_stopRainbowAnchor(e)
{
if (act) {
if (objActive.nodeName == 'A') {
objActive.style.color = clrOrg;
clearInterval(TimerID);
act = 0;
}
}
}


//=============================================================================
// Change Color
// This function changes a color actually.
//=============================================================================
function ChangeColor()
{
objActive.style.color = makeColor();
}


//=============================================================================
// makeColor
// This function makes rainbow colors.
//=============================================================================
function makeColor()
{
// Don't you think Color Gamut to look like Rainbow?

// HSVtoRGB
if (elmS == 0) {
elmR = elmV; elmG = elmV; elmB = elmV;
}
else {
t1 = elmV;
t2 = (255 - elmS) * elmV / 255;
t3 = elmH % 60;
t3 = (t1 - t2) * t3 / 60;

if (elmH < 60) {
elmR = t1; elmB = t2; elmG = t2 + t3;
}
else if (elmH < 120) {
elmG = t1; elmB = t2; elmR = t1 - t3;
}
else if (elmH < 180) {
elmG = t1; elmR = t2; elmB = t2 + t3;
}
else if (elmH < 240) {
elmB = t1; elmR = t2; elmG = t1 - t3;
}
else if (elmH < 300) {
elmB = t1; elmG = t2; elmR = t2 + t3;
}
else if (elmH < 360) {
elmR = t1; elmG = t2; elmB = t1 - t3;
}
else {
elmR = 0; elmG = 0; elmB = 0;
}
}

elmR = Math.floor(elmR).toString(16);
elmG = Math.floor(elmG).toString(16);
elmB = Math.floor(elmB).toString(16);
if (elmR.length == 1) elmR = "0" + elmR;
if (elmG.length == 1) elmG = "0" + elmG;
if (elmB.length == 1) elmB = "0" + elmB;

elmH = elmH + rate;
if (elmH >= 360)
elmH = 0;

return '#' + elmR + elmG + elmB;
}

// ]]></script>


5. Kemudian “Simpan” dan silahkan lihat hasilnya.



Tutorial Diatas Di-Ilhami
Dari
http://www.dynamicdrive.com/




 
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