Sketch help needed. Joining of 2 sketches to make Vending machine sketch. 28by-4

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1

Hi. Sketch help is needed. For the Joining of 2 sketches to make Vending machine sketch. Using 28by-48 stepper motor.
I think this is what everybody is looking for but. nobody has done. Please and thank you.

Sketch 1

const int coinInt = 0;
//Attach coinInt to Interrupt Pin 0 (Digital Pin 2). Pin 3 = Interrpt Pin 1.

volatile float coinsValue = 0.00;
//Set the coinsValue to a Volatile float
//Volatile as this variable changes any time the Interrupt is triggered
int coinsChange = 0;
//A Coin has been inserted flag

void setup()
{
Serial.begin(9600);
//Start Serial Communication
attachInterrupt(coinInt, coinInserted, RISING);
//If coinInt goes HIGH (a Pulse), call the coinInserted function
//An attachInterrupt will always trigger, even if your using delays
}

void coinInserted()
//The function that is called every time it recieves a pulse
{
coinsValue = coinsValue + 0.05;
//As we set the Pulse to represent 5p or 5c we add this to the coinsValue
coinsChange = 1;
//Flag that there has been a coin inserted
}

void loop()
{
if(coinsChange == 1)
//Check if a coin has been Inserted
{
coinsChange = 0;
//unflag that a coin has been inserted

} if(coinsValue >= 0.50)
{
//your code here, eg Start stepper motor 28byj-48 }

Sketch 2

*/

#include <Stepper.h>

const int stepsPerRevolution = 200; // change this to fit the number of steps per revolution
// for your motor

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8,9,10,11);

void setup() {
// set the speed at 60 rpm:
myStepper.setSpeed(60);
// initialize the serial port:
Serial.begin(9600);
}

void loop() {
// step one revolution in the other direction:
Serial.println("counterclockwise");
myStepper.step(-stepsPerRevolution);
delay(500);
}