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int x, nilai; x
= 5;
nilai = ++x; /* berarti x = x + 1; nilai =
x; */ printf("nilai = %d, x = %d\n", nilai, x);
nilai = x++; /* berarti nilai = x; nilai = x
+ 1; */ printf("nilai = %d, x = %d\n", nilai, x);
getch();
}

Outputnya : nilai = 6, x = 6

nilai = 6, x = 7

/*Contoh ke-2 operator peningkatanunary */
//Programmer :……
#include "stdio.h"
#include "conio.h" int
main()

{
int b, nilai; b
= 15;
nilai = --b; /* berarti b = b - 1; nilai =
b; */ printf("nilai = %d, b = %d\n", nilai, b);
nilai = b--; /* berarti nilai = b; b = b +
1; */ printf("nilai = %d, b = %d\n", nilai, b);
getch();
}

Ouputnya : nilai = 14, b= 14

nilai = 14, b=13

CONTOH PROGRAM C++

 Konstanta
#include <iostream>
using namespace std;
int main ()
{
const float PI = 3.14;
float LuarLingkaran, Jari2;

cout <<"\n === Program Luas Lingkaran === \n\n";

cout <<"Masukkan nilai Jari-jari : "; cin>>Jari2;
// PI = 10; seandainya PI dirubah 10 maka akan error
// silakan dicoba
LuarLingkaran = PI * Jari2 * Jari2;
cout <<"Luas Lingkaran : " <<LuarLingkaran<<endl;
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