C++ | Calcolo Delta

[ Utilizzando Visual C++ Express Edition 2008 ]

### stdafx.h

// stdafx.h : include file for standard system include files,
// or project specific include files that are used frequently, but
// are changed infrequently

#pragma once

// TODO: reference additional headers your program requires here

#include <stdio.h>
#include <iostream>
#include <math.h>

### CalcoloDelta.cpp

// CalcoloDelta.cpp : main project file.

#include "stdafx.h"

using namespace std;
using namespace System;
int main() {
INIZIO:
    float a; float b; float c;
    cout << "CALCOLO DEL DELTA\n" << endl;
        // V b^2 - 4ac
    cout << "Inserisci A: ";
    cin >> a;
    cout << "Inserisci B: ";
    cin >> b;
    cout << "Inserisci C: ";
    cin >> c;
    float ris;
    cout << "\n\nValori inseriti: " << endl;
    cout << "A: " << a << "\nB: " << b << "\nC: " << c << endl;
    b = pow(b,2);
    cout << "\nB^2: " << b << endl;
    ris = (b - (4 * a * c));
    cout << "\nb^2 - (4 * a * c) = " << "\n= " << b << " - (4 * " << a << " * " << c << ") = " << "\n= " << ris << endl;
    if(ris < 0) { cout << "\nDelta negativo" <<endl; }
    if(ris > 0) { cout << "\nDelta positivo" << endl; }
    if(ris == 0) { cout << "\nDelta uguale a zero" << endl; }

CHIUDI:
    cout << "\nInserisci Y per ricominciare, oppure N per chiudere. Poi premi Invio." << endl;
    String^ t;
    t = Console::ReadLine();
    if(t == "N" || t == "n") {
        exit;
    }
    else if(t == "Y" || t == "y") {
        cout << "\n\nRicominciamo...\n\n";
        goto INIZIO;
    }
    else {
        cout << "\nValore non riconosciuto" << endl;
        goto CHIUDI;
    }
}