1. #include<iostream>
//#include<constrea>
#include<cstring>
using namespace std;
main()
{
double x, y, z, hasil;
cout<<"KALKULATOR SEDERHANA nby = http://mohnurfawaiq.blogspot.com n---------------------------
----------n";
string jml="Penjumlahan";
string kurang="Pengurangan";
string bagi="Pembagian";
string kali="Perkalian";
cout<<"nMasukkan nilai 1 = ";
cin>>x;
cout<<"Masukkan nilai 2 = ";
cin>>y;
cout<<"nOperator Aritmatika n1. Penjumlahan n2. Pengurangan n3. Pembagian n4.
Perkaliann";
a:
cout<<"nMasukkan Operator = ";
cin>>z;

2. if(z==1)
{
hasil=x+y;
cout<<"Hasil operasi "<<jml<<", "<<x<<" dan "<<y<<" = "<<hasil<<endl;
}
else if(z==2)
{
hasil=x-y;
cout<<"Hasil operasi "<<kurang<<", "<<x<<" dan "<<y<<" = "<<hasil<<endl;
}
else if(z==3)
{
hasil=x/y;
cout<<"Hasil operasi "<<bagi<<", "<<x<<" dan "<<y<<" = "<<hasil<<endl;
}
else if(z==4)
{
hasil=x*y;
cout<<"Hasil operasi "<<kali<<", "<<x<<" dan "<<y<<" = "<<hasil<<endl;
}
else
{
cout<<"Keyword yang Anda masukkan SALAH!n";
goto a;
}
//getch();
}