#include
<iostream>
using
namespace std;
void
PassByValue(int b, int g){
b += 3, g += 4;
cout << "\nWithin
PassByValue(), now";
cout << "\n\tBoys = " << b;
cout << "\n\tGirls =
" << g;
}
void
Reference(int &b, int &g){
b += 3, g += 4;
cout << "\nWithin
Reference(), now";
cout << "\n\tBoys = " << b;
cout << "\n\tGirls =
" << g;
}
void
Pointers(int *b, int *g){
*b += 3, *g += 4;
cout << "\nWithin
Pointers(), now";
cout << "\n\tBoys = " << *b;
cout << "\n\tGirls =
" << *g;
}
int
main(){
int Boys = 3, Girls = 5;
void PassByValue(int males, int
females);
void Reference(int &m, int
&f);
void Pointers(int *u, int *v);
cout << "At startup,
within main()";
cout << "\n\tBoys = " << Boys;
cout << "\n\tGirls =
" << Girls;
cout << "\nPassing
arguments by value = Copy";
PassByValue(Boys, Girls);
cout << "\nAfter calling
PassByValue(), within main()";
cout << "\n\tBoys = " << Boys;
cout << "\n\tGirls =
" << Girls;
cout << "\nPassing
arguments by reference";
Reference(Boys, Girls);
cout << "\nAfter calling
Reference(), within main()";
cout << "\n\tBoys = " << Boys;
cout << "\n\tGirls =
" << Girls;
cout << "\nPassing
arguments pointers";
Pointers(&Boys, &Girls);
cout << "\nAfter calling
Pointers(), within main()";
cout << "\n\tBoys = " << Boys;
cout << "\n\tGirls =
" << Girls;
cout << "\n";
return 0;
}
#include
<iostream>
#include
<math.h>
using
namespace std;
int
double_it(int *a, int *b) //fungsi dobel
{
*a *= 2; //pengalamatan
variable a inputan dikalikan 2
*b *= 2; // pengalamatan
variable b inputan dikalikan 2}
int
pangkat_it(int *x, int *y) //fungsi pangkat
{
*x =(*x)*(*x); //pengalamatan
variable x dengan perhitungan pangkat (*x)*(*x)
*y =(*y)*(*y); //
pengalamatan variable x dengan perhitungan pangkat (*x)*(*x)
}
int
main() //program utama
{
int x, y;
cout << "Masukkan dua
angka(dipisah dengan'enter') " << endl;
cin >> x >> y;
double_it(&x, &y); //pemanggilan fungsi dobel
cout << "di double kan"
<<endl;
cout << "angka pertama \t =
\t" << x << endl;
cout << "angka kedua \t = \t" << y <<endl;
pangkat_it(&x, &y); //pemanggilan
fungsi pangkat
cout << "Setelah
dipangkatkan" <<endl;
cout << "angka pertama \t = \t"
<< x << endl;
cout << "angka kedua \t =
\t" << y <<endl;
}
Penjelasan program
Bagian
fungsi double dan fungsi pangkat (bias dilihat di source code) . *a *= 2;
disini maksunya input dikalikan dua atau double
sesuai dengan definisinya “*” menghasilkan nilai yang berada disebuah
alamat yang ditujukan oleh “&”(bias dilihat di program utama) nah dapat
disimpulkan apapun nilai yang nantinya dihasilkan “*a” maka akan dikalikan “2”
Sementara
*x =(*x)*(*x); itu hanya mengalikan sesame yg artinya seperti pemangkatan.
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