Program untuk merepresentasikan operasi-operasi aritmatika

#include <iostream>
#include <stdio.h>
#include <conio.h>
using namespace std;

class c{
public :
aduh();
 void input();
 void proses();

    private :
    int a,b,hasil;
};

c::aduh(){
cout<<"ntah apa nama ny\n\n";
}

void c::input(){
cout<<"nilai pertama : ";
cin>>a;
cout<<"nilai kedua : ";
cin>>b;
cout<<"_______________________________________________\n\n";
}


void c::proses(){

cout<<"OPERASI-OPERASI ARITMATIKA"<<endl;

hasil=a+b;
cout<<a<<"+"<<b<<"= "<<hasil<<endl;
hasil=a-b;
cout<<a<<"-"<<b<<"= "<<hasil<<endl;;
hasil=a*b;
cout<<a<<"*"<<b<<"= "<<hasil<<endl;;
hasil=a/b;
cout<<a<<":"<<b<<"= "<<hasil<<endl;;
}
int main(){
c o;

o.input();
o.proses();

return 0;
}

Raptor :