C++ Persegi panjang

Universitas Pamulang

Fakultas Teknik Informatika.

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#include<iostream>
#include<math.h>
#include<conio.h>
#include<stdio.h>
using namespace std;
int main(){
    char ulang;
    do {
    int pilih;
double panjang,lebar,luas,keliling,diagonal;
//clrscr();
panjang=9;
lebar=5;
cout<<"menu empat persegi panjang" <<endl;
cout<<"----------------------------------" <<endl;
cout<<"1. Hitung Luas" <<endl;
cout<<"2. Hitung Keliling" <<endl;
cout<<"3. Hitung Diagonal" <<endl;
cout<<"4. Keluar" <<endl;
cout<<"----------------------------------" <<endl;
cout<<"Masukan Pilihan[1,2,3,4] :";cin>>pilih;

cout<<"Masukan Panjang    : "; cin>>panjang;
cout<<"Masukan Lebar    : " ;cin>>lebar ;
 cout<<endl;
switch(pilih)
{
case 1 :{
luas=panjang*lebar;
cout<<"Luas Persegi panjang = " <<luas <<endl;
break;
}
case 2 :{
keliling=(2 * panjang) + (2 * lebar);
cout<<"Keliling dari persegi panjang adalah = " <<keliling <<endl;
break;
}
case 3 :{
diagonal=sqrt((double) panjang * panjang + (double) lebar*lebar);
cout<<"diagonal dari persegi panjang =  " <<diagonal <<endl;
break;
}
case 4 : {
cout<<"Terima kasih telah menggunakan program ini";
}
}
cout<<"mencoba lagi [y/t] ? ";cin>>ulang;
    }while ((ulang=='y') || (ulang=='Y'));
\
system("PAUSE");
}