function call missing argument

[haider885]

I have same type of errors in my program please help me out....
I am just a Beginner in C++....

#include "iostream"
#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
using namespace std;

class form
{
private:
	char fname[20];
	char lname[20];
	char add[50];
	char city[25];
	int contact;
public:
		form()
	{
	fname[20]='\0';
	lname[20]='\0';
	add[50]='\0';
	city[25]='\0';
	contact=0;
	}
	void input()
	{
		system("cls");
		cout << "----------------------------------------------" << endl;
		cout << "**********************************************" << endl;
		cout << "----------------------------------------------" << endl;
		cout << "\nEnter First Name: " << endl;
		cin.getline(fname, 20);
		cout << "\nEnter Last Name Name: " << endl;
		cin.getline(lname, 20);
		cout << "\nEnter Your Address: " << endl;
		cin.getline(add, 50);
		cout << "\nEnter Your City: " << endl;
		cin.getline(city, 25);
		cout << "Enter Your Contact: ";
		cin >> contact;
		cout << endl;
		cout << "----------------------------------------------" << endl;
		cout << "**********************************************" << endl;
		cout << "----------------------------------------------" << endl;

	}//end of input-function
	void display()
	{
		system("cls");
		cout << "----------------------------------------------" << endl;
		cout << "**********************************************" << endl;
		cout << "----------------------------------------------" << endl;
		cout << "Full Name: " << fname<< " " << lname << endl;
		cout << "Address: " << add << endl;
		cout << "Contact: " << contact << endl;
		cout << "----------------------------------------------" << endl;
		cout << "**********************************************" << endl;
		cout << "----------------------------------------------" << endl;
	}//end of display-function


};//End of class-form

class complaint_type
{
	
public:
	void low_speed()
	{
		system("cls");
		cout << "Your Device Parameters are LOW" << endl;
		cout << "Your Complain Number is 91" << endl;
		cout << "Call 1218 for information" << endl;
		cout << "Thank You for Using PTCL" << endl;
	}
	void disconnecting()
	{
		system("cls");
		cout << "Problem in device";
		cout << "Please goto EVO ONE STOP SHOP for repair" << endl;
		cout << "Your Complain Number is 19" << endl;
		cout << "Call 1218 for information" << endl;
		cout << "Thank You for Using PTCL" << endl;


	}
	void bill()
	{
		system("cls");
		cout << "Your Complain Number is 81" << endl;
		cout << "Call 1218 for for information" << endl;
		cout << "Thank You for Using PTCL" << endl;
	}
	void browsing()
	{
		system("cls");
		cout << "Your Complain Number is 45" << endl;
		cout << "Call 1218 for information" << endl;
		cout << "Thank You for Using PTCL" << endl;
	}
	void voice()
	{
		system("cls");
		cout << "Your Complain Number is 65" << endl;
		cout << "Call 1218 for information" << endl;
		cout << "Thank You for Using PTCL" << endl;
	}
	void signal()
	{
		system("cls");
		cout << "Your Complain Number is 33" << endl;
		cout << "Call 1218 for information" << endl;
		cout << "Thank You for Using PTCL" << endl;

	}



};//end of coplaint-type

class PTCL
{
	
private:
	complaint_type *obj;
	int select,lnum,MDN;
public:
	
	void EVO()
	{
		system("cls");
		cout << "------------Welcome to EVO Complaint------------" << endl;
		cout << "Enter Your MDN: ";
		cin >> MDN;
		cout << endl;
		cout << "1. Low Speed" << endl;
		cout << "2. Signal" << endl;
		cout << "3. Browsing" << endl;
		cout << "4. Disconnecting" << endl;
		cout << "5. Billing" << endl;
		cout << "Enter Your Section: " << endl;
		cin >> select;
		if (select == 1)
		{
			obj->low_speed;
		}
		else if (select==2)
		{
			obj->signal;
		}
		else if (select == 3)
		{
			obj->browsing;
		}
		else if (select == 4)
		{
			obj->disconnecting;
		}
		else if (select == 5)
		{
			obj->bill;
		}
		else
		{
			cout << "\nWrong Selection";
		}

	}
	void Broadband()
	{
		system("cls");
		cout << "------------Welcome to Broadband Complaint------------" << endl;
		cout << "Enter Your Number With area code: ";
		cin >> lnum;
		cout << endl;
		cout << "1. Low Speed" << endl;
		cout << "2. Browsing" << endl;
		cout << "3. Disconnecting" << endl;
		cout << "4. Billing" << endl;
		cout << "Enter Your Section: " << endl;
		cin >> select;
		if (select == 1)
		{
			obj->low_speed;
		}
		
		else if (select == 2)
		{
			obj->browsing;
		}
		else if (select == 3)
		{
			obj->disconnecting;
		}
		else if (select == 4)
		{
			obj->bill;
		}
		else
		{
			cout << "\nWrong Selection";
		}

	}
	void Landline()
	{
		system("cls");
		cout << "------------Welcome to LandLine Complaint------------" << endl;
		cout << "Enter Your Number With area code: ";
		cin >> lnum;
		cout << endl;
		cout << "1. Voice" << endl;
		cout << "2. Disconnecting" << endl;
		cout << "3. Billing" << endl;
		cout << "Enter Your Section: " << endl;
		cin >> select;
		if (select == 1)
		{
			obj->voice;
		}

		else if (select == 2)
		{
			obj->disconnecting;
		}
		else if (select == 3)
		{
			obj->bill;
		}
		
		else
		{
			cout << "\nWrong Selection";
		}

	}


};
int main(int argc, char *argv[])
{
	PTCL *obj2;
	cout << "-----------------Welcome to--------------------" << endl;
	cout << "----------PTCL Complain Management-------------" << endl;
	cout << "\n\n";
	cout << "1. LandLine" << endl;
	cout << "2. Broadband" << endl;
	cout << "3. EVO Wireless" << endl;
	cout << "4. Form" << endl;
	int a;
	cout << "Enter Selection: ";
	cin >> a;
	switch (a)
	{
	case 1:
	{
			  
			  obj2->Landline;
			  break;
	}
	case 2:
	{
			  obj2->Broadband;
			  break;
	}
	case 3:
	{
			  obj2->EVO;
			  break;
	}
	default:
	{
			   cout << "Wrong Input";
			   break;
	}
	}
	
	return 0;
}

[Disch]

What are the errors?

[haider885]

function call missing argument.....

[long double main]

PTCL *obj2;
This doesn't actually instantiate an object -- it just declares a pointer.
It looks like you don't actually need to a pointer here, so you can just change it to
PTCL obj2;.

Also, your function calls are wrong.
For instance:
obj2->Landline;
If obj2 is a pointer, then it should be obj2->Landline();, and if it's not (which is the case if you make the other change above), then it should be obj2.Landline();.