#include <cstdlib>
#include <iostream>
#include <iomanip>
using namespace std;

void addNumbers()
{
    int a,b,s;

    cout<<"Prosthesi dyo arithmwn"<<endl<<"Dwste ton prwto arithmo:   ";
    cin>>a;
    cout<<endl<<"Dwste ton deutero arithmo:   ";
    cin>>b;
    s=a+b;
    cout<<"Athroisma:  "<<s;
}

void subtractNumbers()
{
    int a,b,s;

    cout<<"Afairesi dyo arithmwn"<<endl<<"Dwste ton prwto arithmo:   ";
    cin>>a;
    cout<<endl<<"Dwste ton deutero arithmo:   ";
    cin>>b;
    s=a-b;
    cout<<"Diafora:  "<<s;
}

void multiplyNumbers()
{
    int a,b,s;

    cout<<"Pollaplasiasmos dyo arithmwn"<<endl<<"Dwste ton prwto arithmo:   ";
    cin>>a;
    cout<<endl<<"Dwste ton deutero arithmo:   ";
    cin>>b;
    s=a*b;
    cout<<"Ginomeno:  "<<s;
}

void devideNumbers()
{
    float a,b,s;

    cout<<"Diairesi dyo arithmwn"<<endl<<"Dwste ton prwto arithmo:   ";
    cin>>a;
    cout<<endl<<"Dwste ton deutero arithmo:   ";
    cin>>b;
    s=a/b;

    cout<<"Piliko:  "<< fixed << setprecision(2)<<s;
}

int main(int argc, char** argv) {
addNumbers();
cout<<endl<<endl;
subtractNumbers();
cout<<endl<<endl;
multiplyNumbers();
cout<<endl<<endl;
devideNumbers();
    return 0;
}