Issue IPAddress by Serial.read()

I would like to be able to type in a specific IP address into the serial monitor and have that number be used as the NTP website IP address to get the time from. I took the NTP example that came pre-loaded with the arduino library, and combined it with Robins example in post #1

#include <SPI.h>         
#include <Ethernet.h>
#include <EthernetUdp.h>

// Enter a MAC address for your controller below.
// Newer Ethernet shields have a MAC address printed on a sticker on the shield
byte mac[] = {  
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };

unsigned int localPort = 8888;      // local port to listen for UDP packets

IPAddress timeServer(132, 163, 4, 101); // time-a.timefreq.bldrdoc.gov NTP server
// IPAddress timeServer(132, 163, 4, 102); // time-b.timefreq.bldrdoc.gov NTP server
// IPAddress timeServer(132, 163, 4, 103); // time-c.timefreq.bldrdoc.gov NTP server

const int NTP_PACKET_SIZE= 48; // NTP time stamp is in the first 48 bytes of the message

byte packetBuffer[ NTP_PACKET_SIZE]; //buffer to hold incoming and outgoing packets 

// A UDP instance to let us send and receive packets over UDP
EthernetUDP Udp;
//-----------------------------From Robins Example----------------------
const byte numChars = 32;
char receivedChars[numChars];

boolean newData = false;
//-----------------------------------------------------------------------
void setup() 
{
 // Open serial communications and wait for port to open:
  Serial.begin(9600);
   while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo only
  }


  // start Ethernet and UDP
  if (Ethernet.begin(mac) == 0) {
    Serial.println("Failed to configure Ethernet using DHCP");
    // no point in carrying on, so do nothing forevermore:
    for(;;)
      ;
  }
  Udp.begin(localPort);
}

void loop() {
	recvWithStartEndMarkers();
	showNewData();
}

void recvWithStartEndMarkers() {
	static boolean recvInProgress = false;
	static byte ndx = 0;
	char startMarker = '<';
	char endMarker = '>';
	char rc;
	
	// if (Serial.available() > 0) {
        while (Serial.available() > 0 && newData == false) {
		rc = Serial.read();

		if (recvInProgress == true) {
			if (rc != endMarker) {
				receivedChars[ndx] = rc;
				ndx++;
				if (ndx >= numChars) {
					ndx = numChars - 1;
				}
			}
			else {
				receivedChars[ndx] = '\0'; // terminate the string
				recvInProgress = false;
				ndx = 0;
				newData = true;
			}
		}

		else if (rc == startMarker) {
			recvInProgress = true;
		}
	}
}

void showNewData() {
	if (newData == true) {
//sendNTPpacket(timeServer); // send an NTP packet to a time server
sendNTPpacket(receivedChars);
    // wait to see if a reply is available
  delay(1000);  
  if ( Udp.parsePacket() ) {  
    // We've received a packet, read the data from it
    Udp.read(packetBuffer,NTP_PACKET_SIZE);  // read the packet into the buffer

    //the timestamp starts at byte 40 of the received packet and is four bytes,
    // or two words, long. First, esxtract the two words:

    unsigned long highWord = word(packetBuffer[40], packetBuffer[41]);
    unsigned long lowWord = word(packetBuffer[42], packetBuffer[43]);  
    // combine the four bytes (two words) into a long integer
    // this is NTP time (seconds since Jan 1 1900):
    unsigned long secsSince1900 = highWord << 16 | lowWord;  
    Serial.print("Seconds since Jan 1 1900 = " );
    Serial.println(secsSince1900);               

    // now convert NTP time into everyday time:
    Serial.print("Unix time = ");
    // Unix time starts on Jan 1 1970. In seconds, that's 2208988800:
    const unsigned long seventyYears = 2208988800UL;     
    // subtract seventy years:
    unsigned long epoch = secsSince1900 - seventyYears;  
    // print Unix time:
    Serial.println(epoch);                               


    // print the hour, minute and second:
    Serial.print("The UTC time is ");       // UTC is the time at Greenwich Meridian (GMT)
    Serial.print((epoch  % 86400L) / 3600); // print the hour (86400 equals secs per day)
    Serial.print(':');  
    if ( ((epoch % 3600) / 60) < 10 ) {
      // In the first 10 minutes of each hour, we'll want a leading '0'
      Serial.print('0');
    }
    Serial.print((epoch  % 3600) / 60); // print the minute (3600 equals secs per minute)
    Serial.print(':'); 
    if ( (epoch % 60) < 10 ) {
      // In the first 10 seconds of each minute, we'll want a leading '0'
      Serial.print('0');
    }
    Serial.println(epoch %60); // print the second
  }
  
}
}

// send an NTP request to the time server at the given address 
unsigned long sendNTPpacket(IPAddress& address)
{
  // set all bytes in the buffer to 0
  memset(packetBuffer, 0, NTP_PACKET_SIZE); 
  // Initialize values needed to form NTP request
  // (see URL above for details on the packets)
  packetBuffer[0] = 0b11100011;   // LI, Version, Mode
  packetBuffer[1] = 0;     // Stratum, or type of clock
  packetBuffer[2] = 6;     // Polling Interval
  packetBuffer[3] = 0xEC;  // Peer Clock Precision
  // 8 bytes of zero for Root Delay & Root Dispersion
  packetBuffer[12]  = 49; 
  packetBuffer[13]  = 0x4E;
  packetBuffer[14]  = 49;
  packetBuffer[15]  = 52;

  // all NTP fields have been given values, now
  // you can send a packet requesting a timestamp: 		   
  Udp.beginPacket(address, 123); //NTP requests are to port 123
  Udp.write(packetBuffer,NTP_PACKET_SIZE);
  Udp.endPacket(); 
}

The error message is

UdpNtpClient.ino: In function 'void showNewData()':
UdpNtpClient:89: error: invalid initialization of non-const reference of type 'IPAddress&' from a temporary of type 'char*'
UdpNtpClient:13: error: in passing argument 1 of 'long unsigned int sendNTPpacket(IPAddress&)'

The problem is here, I just don't know what I need to fix it to make it work. Can it be done?

//sendNTPpacket(timeServer); // send an NTP packet to a time server
sendNTPpacket(receivedChars);

I did as you suggested, but it still didn't work. I then thought maybe I had to add the comma's into the number thing so I tried that as well. In the end I did this

void showNewData() {
if (newData == true) {
//sendNTPpacket(timeServer); // send an NTP packet to a time server
sendNTPpacket(132,163,4,101); //receivedChars);
// wait to see if a reply is available

Where I put in directly into the code. I recieved the following error message

UdpNtpClient.ino: In function 'void showNewData()':
UdpNtpClient:89: error: invalid initialization of non-const reference of type 'IPAddress&' from a temporary of type 'int'
UdpNtpClient:13: error: in passing argument 1 of 'long unsigned int sendNTPpacket(IPAddress&)'

I also tried to create an IPAddress there like this

void showNewData() {
if (newData == true) {
//sendNTPpacket(timeServer); // send an NTP packet to a time server
sendNTPpacket (IPAddress(132, 163, 4, 101)); //(receivedChars);
// wait to see if a reply is available

I then received this error message

UdpNtpClient.ino: In function 'void showNewData()':
UdpNtpClient:89: error: invalid initialization of non-const reference of type 'IPAddress&' from a temporary of type 'IPAddress'
UdpNtpClient:13: error: in passing argument 1 of 'long unsigned int sendNTPpacket(IPAddress&)'