MENGHITUNG LUAS PERSEGI , PERSEGI PANJANG, DAN LINGKARAN DENGAN C++

 MENGHITUNG LUAS PERSEGI , PERSEGI PANJANG,  DAN LINGKARAN DENGAN C++

#include <iostream.h>

#include <conio.h>

void main() {

                int i, n, angka, pilihan;

                float sisi=0, panjang=0, lebar=0, jari=0, luas=0;

                cout << "pilih salah satu :\n"

                                << "1. Menghitung Luas Persegi\n"

                                << "2. Menghitung luas Persegi panjang\n"

                                << "3. Menghitung Luas Lingkaran \n"

                                << "4. Keluar dari program\n\pilihan : ";

                cin >> pilihan;

                switch (pilihan) {

                                case 1:

                                clrscr() ;

                                                cout << "Masukkan sisi : ";

                                                cin >> sisi;

                                                luas = sisi * sisi;

                                                cout<<"Luas Persegi : "<<luas;

                                                getch() ;

                                                case 2:

                                                                clrscr();

                                                                cout << "masukkan panjang : ";

                                                                cin>>panjang;

                                                                cout <<"masukkan lebar : ";

                                                                cin>>lebar;

                                                                luas = panjang * lebar ;

                                                                cout << "Luas persegi panjang: " << luas;

                                                                getch();

                                                case 3 :

                                                                clrscr();

                                                                cout << "masukkan jari-jari : ";

                                                                cin>>jari;

                                                                luas = 3.14 * jari * jari;

                                                                cout << "Luas lingkaran : " << luas;

                                                                getch();

                                                case 4:

                                                                break;

                                                                default :

                                                                                getch();

                                                                cout << "inputan anda salah";

}

}