Problem with Arduino Computations

What am I doing wrong here? I’m not getting any values of power.

#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x3F, 2, 1, 0, 4, 5, 6, 7);

#include "EmonLib.h"                   // Include Emon Library
EnergyMonitor emon1;                   // Create an instance


//voltage variables
int sensorValue = 0;
double voltage = 0;
int voltagepin = A0;

//current variables
double current = 0;
int currentpin = A1;

//power reading variables
double power = 0;
int V = 0;
int C = 0;

void Voltage();
void Current();
void Power();

void setup() {
  // put your setup code here, to run once:
  lcd.begin(20,4);
  lcd.setBacklightPin(3, POSITIVE);

  //LCD backlight
  lcd.setBacklight(HIGH);
  Serial.begin(9600);

  emon1.current(currentpin, 111.1);// Current: input pin, calibration.

 lcd.home();
lcd.setCursor(7,1);
lcd.print("Power");
lcd.setCursor(4,2);
lcd.print("Measurement");
delay(5000);
lcd.clear();
  
}

void loop() {
  // put your main code here, to run repeatedly:
Voltage();
Current();

Power();
}

void Power(){

V = voltage;
C = current;
power = V * C;
lcd.setCursor(7,2);
lcd.print(power);
lcd.setCursor(7,3);
lcd.print("Watts");

//delay(1000);
}

void Voltage(){
    // read the input on analog pin 0:
  int sensorValue = analogRead(voltagepin);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 250V):
  float voltage = (sensorValue * (220.0 / 1024.0)) + 0.2;
  // print out the value you read:
  //lcd.clear();
  lcd.home();
  //lcd.print("AC Voltage: ");
  Serial.print("AC Voltage: ");
  //lcd.setCursor(0,1);
  lcd.print(voltage);
  Serial.print(voltage);
  lcd.setCursor(0,1);
  lcd.print("Volts");
  Serial.println(" Volts");
  //delay(500);
}

void Current(){
  current = emon1.calcIrms(1480);  // Calculate Irms only
  
  //Serial.print(Irms*230.0);         // Apparent power
  //Serial.print(" ");
  //lcd.home();
  //lcd.print("AC Current: ");
  lcd.setCursor(14,0);
  lcd.print(current);
  lcd.setCursor(14,1);
  lcd.print(" Amps");
  Serial.print("AC Current: ");
  Serial.print(current);// Irms
  Serial.println("Amps");
  //delay(500);
}

Lose the float on this line:

 float voltage = (sensorValue * (220.0 / 1024.0)) + 0.2;

you're declaring a local which masks the global you use in the power calc.

dude it worked!! stupid rookie mistake haha than you ;)