#include "stdafx.h"
#include <iostream>
using namespace std;
void plus();
void minus();
void mult(); //Here are the declerations of the functions.
void dev();
void exit();
int main()
{
int sth=0;
while(1) //The while loop,will execute again and again the stuff below(but only code which is in it's scopes!)
{
cout << "Press 1 for Addition" << endl;
cout << "Press 2 for Subtraction" << endl ; //Here are the senteces about calculations..
cout << "Press 3 for Multiplication" << endl;
cout...
