Help with code (menu not declared)

Code errors
#1

// Include Libraries
#include “Arduino.h”
#include “PiezoSpeaker.h”
#include “SoilMoisture.h”

// Pin Definitions
#define PIEZOSPEAKER5V_PIN_SIG 3
#define SOILMOISTURE5V_PIN_SIG A0

// Global variables and defines
unsigned int piezoSpeaker5vHoorayLength = 6; // amount of notes in melody
unsigned int piezoSpeaker5vHoorayMelody[] = {NOTE_C4, NOTE_E4, NOTE_G4, NOTE_C5, NOTE_G4, NOTE_C5}; // list of notes. List length must match HoorayLength!
unsigned int piezoSpeaker5vHoorayNoteDurations[] = {8 , 8 , 8 , 4 , 8 , 4 }; // note durations; 4 = quarter note, 8 = eighth note, etc. List length must match HoorayLength!
// object initialization
PiezoSpeaker piezoSpeaker5v(PIEZOSPEAKER5V_PIN_SIG);
SoilMoisture soilMoisture5v(SOILMOISTURE5V_PIN_SIG);

// define vars for testing menu
const int timeout = 10000; //define timeout of 10 sec
char menuOption = 0;
long time0;

// Setup the essentials for your circuit to work. It runs first every time your circuit is powered with electricity.
void setup()
{
// Setup Serial which is useful for debugging
// Use the Serial Monitor to view printed messages
Serial.begin(9600);
while (!Serial) ; // wait for serial port to connect. Needed for native USB
Serial.println(“start”);

menuOption = menu();

// Main logic of your circuit. It defines the interaction between the components you selected. After setup, it runs over and over again, in an eternal loop.
void loop()
{

if(menuOption == '1') {
// Piezo Speaker - Test Code
// The Speaker will play the Hooray tune
piezoSpeaker5v.playMelody(piezoSpeaker5vHoorayLength, piezoSpeaker5vHoorayMelody, piezoSpeaker5vHoorayNoteDurations); 
delay(500);   
}
else if(menuOption == '2') {
// Soil Moisture Sensor - Test Code
int soilMoisture5vVal = soilMoisture5v.read();
Serial.print(F("Val: ")); Serial.println(soilMoisture5vVal);

}



if (millis() - time0 > timeout)
{
    menuOption = menu();
}

}

// Menu function for selecting the components to be tested
// Follow serial monitor for instrcutions
char menu()
{

Serial.println(F("\nWhich component would you like to test?"));
Serial.println(F("(1) Piezo Speaker"));
Serial.println(F("(2) Soil Moisture Sensor"));
Serial.println(F("(menu) send anything else or press on board reset button\n"));
while (!Serial.available());

// Read data from serial monitor if received
while (Serial.available()) 
{
    char c = Serial.read();
    if (isAlphaNumeric(c)) 
    {
        if(c == '1') 
			Serial.println(F("Now Testing Piezo Speaker"));
		else if(c == '2') 
			Serial.println(F("Now Testing Soil Moisture Sensor"));
        else
        {
            Serial.println(F("illegal input!"));
            return 0;
        }
        time0 = millis();
        return c;
    }
}

}

/*******************************************************

  • Circuito.io is an automatic generator of schematics and code for off

  • the shelf hardware combinations.

  • Copyright © 2016 Roboplan Technologies Ltd.

  • This program is free software: you can redistribute it and/or modify

  • it under the terms of the GNU General Public License as published by

  • the Free Software Foundation, either version 3 of the License, or

  • (at your option) any later version.

  • This program is distributed in the hope that it will be useful,

  • but WITHOUT ANY WARRANTY; without even the implied warranty of

  • MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  • GNU General Public License for more details.

  • You should have received a copy of the GNU General Public License

  • along with this program. If not, see http://www.gnu.org/licenses/.

  • In addition, and without limitation, to the disclaimers of warranties

  • stated above and in the GNU General Public License version 3 (or any

  • later version), Roboplan Technologies Ltd. (“Roboplan”) offers this

  • program subject to the following warranty disclaimers and by using

  • this program you acknowledge and agree to the following:

  • THIS PROGRAM IS PROVIDED ON AN “AS IS” AND “AS AVAILABLE” BASIS, AND

  • WITHOUT WARRANTIES OF ANY KIND EITHER EXPRESS OR IMPLIED. ROBOPLAN

  • HEREBY DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT

  • NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, TITLE, FITNESS

  • FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, AND THOSE ARISING BY

  • STATUTE OR FROM A COURSE OF DEALING OR USAGE OF TRADE.

  • YOUR RELIANCE ON, OR USE OF THIS PROGRAM IS AT YOUR SOLE RISK.

  • ROBOPLAN DOES NOT GUARANTEE THAT THE PROGRAM WILL BE FREE OF, OR NOT

  • SUSCEPTIBLE TO, BUGS, SECURITY BREACHES, OR VIRUSES. ROBOPLAN DOES

  • NOT WARRANT THAT YOUR USE OF THE PROGRAM, INCLUDING PURSUANT TO

  • SCHEMATICS, INSTRUCTIONS OR RECOMMENDATIONS OF ROBOPLAN, WILL BE SAFE

  • FOR PERSONAL USE OR FOR PRODUCTION OR COMMERCIAL USE, WILL NOT

  • VIOLATE ANY THIRD PARTY RIGHTS, WILL PROVIDE THE INTENDED OR DESIRED

  • RESULTS, OR OPERATE AS YOU INTENDED OR AS MAY BE INDICATED BY ROBOPLAN.

  • YOU HEREBY WAIVE, AGREE NOT TO ASSERT AGAINST, AND RELEASE ROBOPLAN,

  • ITS LICENSORS AND AFFILIATES FROM, ANY CLAIMS IN CONNECTION WITH ANY OF

  • THE ABOVE.
    ********************************************************/